8th grade math please help

8th Grade Math Please Help

Answers

Answer 1
I am not in 8th grade but it might be the 2nd one
Answer 2

Answer:

167y/3

Step-by-step explanation:

x=24-y

x=100/3-5y/3


Related Questions

Find an equation of the line with the slope m=−1/8 that passes through the point ​(−5​,0​). Write the equation in the form Ax+By=C.

Answers

Answer:

x+8y= -5

Step-by-step explanation:

1) the required equation of the line has an slope-interception form:

y=mx+i, where m - slope, i - interception.

2) if the given point belongs to the required line, then it is possible to substitute its coordinates into the equation, then:

0=m*(-5)+i; ⇔-5m+i=0;

3) if the slope m= -1/8, then

-5*(-1/8)+i=0, ⇒5/8+i=0; ⇒ i= -5/8.

4) finally, the required equation is (m= -1/8; i= -5/8):

y= (-1/8)*x-5/8; ⇔ x+8y= -5.

note: the suggested solution is not the only way.

Define Love in 10 words. Don't me with this question rn XD

Answers

Answer:

uh...love is when you feel a certain way around someone

Step-by-step explanation:

In a scale drawing of a rectangular garden,
the length is 15 inches and the width is
9 inches. In the drawing, 2 inches represents
3 yards. What is the width of the actual
garden, in yards?

Answers

Answer:

width is 13.5 yards

Step-by-step explanation:

2" / 3 yds = 9" / 'x' yards

cross-multiply:

2x = 27

x = 13 1/2 yards

On Mars, 3 bags of MartianMallows cost 24 space rocks. If each bag contains 10 MartianMallows, how many space rocks does four MartianMallows cost? Express your answer as an improper fraction.

Answers

Answer:

16/5

Step-by-step explanation:

If each bag contains 10 MartianMallows, then 3 bags contain (3)(10)=30 MartianMallows. Since we know that the cost of 30 MartianMallows is 24 space rocks, we can set up the proportion 24/30=s/4, where s is the cost of four MartianMallows. Solving for s, we find that s=24/30*(4)={16/5 space rocks.

Answer:

16/5

Step-by-step explanation:

If each bag contains 10 MartianMallows, then 3 bags contain (3)(10)=30 MartianMallows. Since we know that the cost of 30 MartianMallows is 24 space rocks, we can set up the proportion 24/30}= s/4, where s is the cost of four MartianMallows.

Solving for s, we find that s=(24/30)x4= 16/5 space rocks.

16/5

A. 6.2 cm2

B. 12.4 cm2

C. 3.1 cm2

D. 9.4 cm2


please answer!! will give brainliest!

Answers

Answer:

The answer is "Option A".

Step-by-step explanation:

[tex]\to Base= 2 \ cm\\\\\to height=3.1 \ cm\\\\[/tex]  

Formula:

[tex]\bold{Area= base \times height}\\\\[/tex]

         [tex]=2 \times 3.1 \\\\= 6.2 \ cm^2[/tex]

if the height value is 3 then area is =6

The first term of a gemotetric sequence is -15 and the common ratio is 6 What is the twelfth term of the sequence

Answers

Answer:

Step-by-step explanation:

a₁₂ = a₁r¹²⁻¹ = -15×6¹¹

write a real-world problem given the equation 2/3x = 12. Then solve the equation.
please answer it quickly 15 points

Answers

Answer:

x = 1/18

Step-by-step explanation:

2/3x = 12

multiply both sides by 3x

2/3x(3x) = 12(3x)

2 = 36x

x = 1/18

7/3 into a mix number

Answers

Answer: 2 1/3

Step-by-step explanation:

Answer and Step-by-step explanation:

To turn [tex]\frac{7}{3}[/tex] into a mixed number, we see how many times 3 goes into 7.

3 goes into 7 two times, so we put a  two on the outside.

[tex]2\frac{1}{3}[/tex]

^ This is your answer, cause when you do 3 times 2, plus the numerator (1), you get 7.

#teamtrees #WAP (Water And Plant)

Find (x + 4)(x2 + x - 2). Write your answer in standard form.
Answer please

Answers

Answer:

X^3 + 5x^2 + 2x - 8

Step-by-step explanation:

simplificati raportul algebric ​

Answers

Answer:

F euuehejuehehheeeuzkvr

Answer:

what is the number

Step-by-step explanation:

i dontvno the answer beacause it is blurred

5.6 x N= 2.24 N=? Please help

Answers

Answer:

N = -3.36

Step-by-step explanation:

5.6 x N= 2.24

-5.6          -5.6

N= -3.36

Answer:

N= 0.4

Step-by-step explanation:

5.6 x N= 2.24

Divide both sides by 5.6

5.6 and 5.6 cancel out

2.24/5.6= 0.4

Check your work

5.6 x 0.4 =2.24

0.4 is correct

Hope this helps ^-^

What is the simplest form of the expression?
✓4502 +502 + 425
Assume all variables are positive.

Answers

Answer:

A. [tex] 8x\sqrt{5} [/tex]

Step-by-step explanation:

Given:

[tex] \sqrt{45x^2} + \sqrt{5x^2} + 4x\sqrt{5} [/tex]

Required:

Simplify

[tex] \sqrt{9*5*x^2} + \sqrt{5*x^2} + 4x\sqrt{5} [/tex]

[tex] 3x\sqrt{5} + x\sqrt{5} + 4x\sqrt{5} [/tex]

Add like terms

[tex] 8x\sqrt{5} [/tex]

Polydactyl cats are cats with extra toes. A researcher believes that the proportion of the population of polydactyl cats in region A is greater than the proportion in region B. Let pB represent the population proportion of polydactyl cats in region A, and let pB represent the population proportion of polydactyl cats in region B. Which of the following are the appropriate hypotheses to test the researchers belief?
A. H0 : PA - PB = 0
Ha : PA is not equal to 0.
B. H0 : PA - PB = 0
Ha : PA - P > = 0
C. H0 : PA - PB = 0
Ha : PA - 0 < 0
D. H0 : P^a - P^b = 0
Ha : P^a - P^b is not equal to 0
E. H0 : P^a - P^b = 0
Ha : P^a - P^b > = 0

Answers

Answer:

B.

H0 : PA - PB = 0

Ha : PA - PB > = 0

Step-by-step explanation:

The Null hypothesis refers to the initial truth in which of there is no significant evidence provided by statistical analysis will remain ; else, the alternative hypothesis which is the opposite of the Null will be favored in place of the Null.

In the scenario above, the claim by the researcher, that "the proportion of the population of polydactyl cats in region A is greater than the proportion in region B." is the Alternative hypothesis ; Ha : PA - PB > = 0 while the Null will be of the notion that the proportion of polydactyl cats in region A and region B are the same.

Sakima is making cookies for a bake sale. He needs to make 20 dozen cookies. For each dozen, he needs 4 ounces of nuts. How many pounds of nuts should he buy?

A. 1 3/5 lb
B. 1/4 lb
C. 2 lb
D. 80 lb
E. 5 lb

Answers

Answer:

5

Step-by-step explanation:

20÷4=5

What is the temperature shown?

Answers

Answer:

-3

....................

Answer:

-3

Step-by-step explanation:

Will mark Brainlyist help me fill out the chart

Answers

Answer:

The working is done in the image attached.

16/20 – 1/4 =


I need help please thank you

Answers

Answer:

11 / 20

Step-by-step explanation:

16 / 20 - 1×5 / 4×5

16 / 20 - 5 / 20

16 - 5 / 20

= 11 / 20

Question 3 (2 points) (06.01) What is the value of the expression 24 + 32? (2 points) Blank 1:

Answers

The answer is 56....

hope it helps.

25 would be the answer. Here's what you need to do!! :)
-
-
-
Explanation:

I think you meant [tex]2^{4}[/tex] and [tex]3^{2}[/tex]. With exponents, you don't add the number and the exponent. What you have to do is the first number times itself, and let's use number one as an example. So, since it's four you have to do this.
-
-
[tex]2^4[/tex]= 2 x 2 x 2 x 2= 16

and for problem number two, it's the same thing but different numbers.

[tex]3^{2}[/tex]= 3 x 3 x 3= 9
-
-
now, all you have to do is add [tex]16+9= 25[/tex]

Again, the answer is 25. Hope this helps anybody who's currently working on this!! <3

2. Simon has to learn 155 words. If he learns 5 words every day. How many days will be take to learn all
the words?​

Answers

Answer:

31 days

Step-by-step explanation:

155/5=31

Answer: 31

Step-by-step explanation:

155 divided by 5 equals 31

Write an equation for the line in slope-intercept
form.
(Use integers or fractions for any numbers in the
equation.)

Answers

The equation would be: y=3x+5
The line crosses the y-axis at 5, so that’s the y-intercept.
The slope is 3 because it goes up by 3 and then 1 to the right, as a fraction it’s 3/1 which is just 3

g A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. where traffic flow in vehicles per hour vehicle speed in miles per hour The following data were collected during rush hour for six highways leading out of the city. Traffic Flow () Vehicle Speed () 1257 36 1329 45 1227 30 1336 50 1349 55 1124 25 a. Use the data to compute the coefficients of this estimated regression equation (to decimals). Enter negative value as negative number. (Create the variable first using Data/Transform

Answers

Answer:

ŷ = 0.1286X - 123.2175 ;

r = 0.947

r² = 0.896

Step-by-step explanation:

Given the data:

Traffic Flow, X : ____Vehicke speed ;Y()

1257 ______________36

1329 ______________45

1227 ______________30

1336 ______________50

1349 ______________55

1124 ______________ 25

The estimated regression equation using a linear regression calculator based on the data given above is given thus:

ŷ = 0.1286X - 123.2175

Where ;

y = dependent variable (vehicle speed)

x = predictor variable (traffic flow)

Slope = 0.1286

Intercept = 123.2175

The correlation Coefficient, R, obtained using the correlation Coefficient calculator is 0.9465, This depicts a very strong positive relationship between traffic flow and vehicle speed.

The Coefficient of determination, R² which is the squared value of the correlation Coefficient = 0.9465² = 0.8958 gives the proportion of explained variance ; This means about 89.5% of variation in Vehicle speed can be explained by the regression line.

I will mark you as brainliest if you get the question right

Answers

Answer:

103

Step-by-step explanation:

x = 180-77 = 103

because it's a straight line, so 180 - 77 to find x

Decide if the following is a true or false statement - explain how you know

(- 1/2) - (4.25) is positive

Answers

Answer:

False

Step-by-step explanation:

The equation equals -1/2 - 4.25 which is -4.75, which is negative.

Hope that helps!

What is the volume of the cone shown below?

Answers

Answer:

A. [tex] 96\pi \: cu. \: units[/tex]

Step-by-step explanation:

Radius of cone (r) = 4 units

Height of cone (h) = 18 units

[tex]V_{cone} = \frac{1}{3} \pi {r}^{2}h \\ \\ = \frac{1}{3} \pi {(4)}^{2} \times 18 \\ \\ = \pi {(4)}^{2} \times 6 \\ \\ = 16\pi \times 6 \\ \\ V_{cone} = 96\pi \: {units}^{3} [/tex]

Your uncle is 2 years older than 3 times your age.

You are x years old. Write an expression to describe your uncles age.

It would be a lot helpful if you could answer this! :D

Answers

you are x

three times is 3x

2 years older is 3x + 2

Answer:

3x+2

Step-by-step explanation:

3 times x plus 2 since he's 2 years older than that

Is the point (1,5)a solution to the equation y=2x+3?​

Answers

Step-by-step explanation:

✰ [tex] \underline{ \underline{ \large{ \tt{ G \: I \: V \: E \: N \: \: P \: O \: I \: N \: T}}}} : [/tex]

( 1 , 5 )

✰ [tex] \underline{ \underline{ \large{ \tt{G \: I \: V\: E \: N \: \: E \: Q \: U \: A \: T \: I \: O \: N}}}} : [/tex]

y = 2x + 3

✰ [tex] \underline{ \underline{ \large{ \tt{T \: O \: \: F\:I \: N \: D}}} }: [/tex]

Whether the point ( 1 , 5 ) , a solution to the equation y = 2x + 3 or not.

[tex] \underline{ \underline{ \large{ \tt{S \: O \: L\: U \: T \: I \: O \: N}}}} : [/tex]

Assuming the the value of x and y as 1 and 5 respectively. Now , plug the values of x and y in the given equation & let's see whether the point ( 1 ,5 ) , solution to the equation y = 2x + 3 or not !

⟶ [tex] \large{ \tt{5 = 2 \times 1 + 3}}[/tex]

⟶ [tex] \large{ \tt{5 = 2 + 3}}[/tex]

⟶ [tex] \large{ \tt{5 = 5}}[/tex]

Since we got 5 on R.H.S & L.H.S, So yeah! The point ( 1 , 5 ) is a solution to the equation y = 2x + 3.

Hope I helped ! ♡

Have a wonderful day / night ! ツ

# [tex] \underbrace{ \tt{Carry \: On \: Learning}}[/tex] !! ✎

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Which statement below is represented by the correct ratio? Choose all that apply.
"For every 4 boys in Mr. Washington's class, there are 3 girls." The ratio of boys to girls is 3:4.
"For every 10 minutes of reading, I can finish 15 pages of my book." The ratio of minutes reading to finished pages is 2.3.
"For every 50 shoppers at the grocery store, 25 watermelons are sold." The ratio of shoppers to watermelons sold is 1:2.
For every 7 tomato plants planted, 36 tomatoes will grow. The ratio of plants to tomatoes is 7:36.

Answers

Answer:

Step-by-step explanation:

Its basic all you do is multiply 4 x 3 and you get 12 ywwww!!!!!!!!!

Dave has $70 saved and earns $20
each month in allowance. Terri has
$110 saved and earns $16 a month
in allowance. If they both save their
entire allowances, how long will it
take before Dave and Terri have saved
the same amount of money?

Answers

Answer:

10 months

Step-by-step explanation:

Please let me know if you want me to write an explanation for my answer :)

SOLVING THE SYSTEM BY ELIMINATION

Answers

Answer:

y=4,x=1

pink box- 10x+2y=18

Step-by-step explanation:

(5x+y =9)2

10x-7y=-18

10x+2y=18

10x-7y=-18

9y=36

y=4

x=1

if my answer helps please mark as brainliest.

Answer:

Pink box: 10x+2y=18

Solution: x=1, y=4

Step-by-step explanation:

2(5x+y=9)

  10x-7y=-18

10x+2y=18

10x-7y=-18

9y=36

y=4

5x+y=9

5x+4=9

5x=5

x=1

(GIVING BRAINLIYEST)
8. what is the volume of these 5 objects

Answers

a= 224in^3

b= 240in^3

2. 144ft^3

3. 135in^3

4. l=4

   w= 3

   h=3

   A= 36in³

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