Answers
Answer:
1,-2
Step-by-step explanation:
Multiply top equation by 3 and bottom by 2
6p+9q=-12
6p+10q=-14
Do bottom - top
(6p+10q)-(6p+9q)= (-14) - (-12)
q = -2
6p + 9(-2)=-12 = 6p=18
6p=18-12=6
p=1
Related Questions
Factor completely.
x^4-11x^2+28
Answers
Answer:
x⁴ - 11x² + 28
= x⁴ - 4x² - 7x² + 28
= x²(x² - 4) - 7(x² - 4)
= (x² - 7)(x² - 4)
[tex] = (x - \sqrt{7} )(x + \sqrt{7} )(x - 2)(x + 2)[/tex]
x^4 - 11x^2 + 28
Write - 11x^2 as a difference
x^4 - 4x^2 - 7x^2 + 28
Factor out x^2 from the expression
x^2 x (x^2 - 4) - 7x^2 + 28
Factor out - 7 from the expression
x^2 x (x^2 - 4) - 7 (x^2 - 4)
Factor out x^2 - 4 from the expression
(x^2 - 4) x (x^2 - 7)
Use a^2 - b^2= (a-b)(a+b) to factor the expression
(x-2) x (x + 2) x (x^2 - 7)
And that’s how it’s (x-2) x (x + 2) x (x^2 - 7) ..... yea and .-.
Lydia is playing Galaxy 8RX. After three misses, the game is over. Last week, Lydia kept track of how long her games lasted. Hse msde a line plot of her data. Lydia said,"My best time is 2 3/4 minutes longer than my worst time because 4 1/4-1 1/2=2 3/4. Is subtraction the correct operation to compare Lydia's best and worst times?Explain. Are Lydia's calculations accurate?Show how you know. In the line plot, what do the numbers Lydia subtracted represent? Does Lydia's conclusion make sense? How did you decide? If not, what can you do to improve her reasoning?
Answers
Answer:
Yes ; Yes ; Yes it makes sense
Step-by-step explanation:
1.) Lydia used subtraction operator to define and establish a relationship between her best and worst game times ; Hence we could conclude that Lydia is correct as this gives the range between both times.
From the numbers given in the question as their is no graph attached :
4 1/4 - 1 1/2
17/4 - 3/2
(17 - 6) / 4
11 /4
= 2 3/4
The subtracted numbers represent the duration of each of the three times game was played ; Hence the numbers represents the game times.
Yes ; Her conclusion makes sense ; as she was able to deduce the range between her best and worst game time
pick the number that will make the following expression true.
Answers
Answer:
78 i believe
Step-by-step explanation:
Answer:
78
Step-by-step explanation:
Divide 27 by 100 and you will see it equals 0.27
knowing this made me realize that the unknown number must be the fraction form of 0.78
2. Find the Surface Area
3 in
4 in
10 in
Answers
Answer:
164 in squared
Step-by-step explanation:
Find area of faces and multiply by 2 because there is another one.
10 x 3 x 2=60
3 x 4 x 2=24
10 x 4 x 2=80
Answer:
164 in^2
Step-by-step explanation:
3*4=12*2=24 in^2
4*10=40*2=80 in^2
3*10=30*2=60 in ^2
24+80+60=164 in^2
Find the area of the future. Round to the nearest tenth if necessary.
use the formulas
for a circle
[tex]a = \pi r ^{2} [/tex]
for a semi circle
[tex]a = \frac{1}{2} \pi r ^{2} [/tex]
for a triangle
[tex]a = \frac{1} {2} bh[/tex]
for a trapezoid
[tex]a = \frac{1}{2} (b _{1} + b_ {2})h[/tex]
for a parallelogram
[tex]a = bh[/tex]
Answers
Please help! (Find the area of the shaded region)
Answers
Answer:
9.43 ft
Step-by-step explanation:
First, we need to find the area of the entire circle(shaded & unshaded), which is 12.57, with a radius of 2 ft. Next, we find the area of the white area, and NOT the shaded area, which is 3.14, with a radius of 1 ft. Now, we need to subtract the white area(3.14) from the total area(12.57), which is 9.43.
Hope this helps!
Maggie made 3kg of fudge. She and her friends ate some and now there are 1 3/4 kg left. How many kg of fudge did maggie and her friends eat?
Answers
Answer:
1 1/4 kg
Step-by-step explanation:
Maggie made 3kg of fudge. She and her friends ate some and now there are 1 3/4 kg left. How many kg of fudge did maggie and her friends eat?
The kg of fudge thay maggie and her friends ate is calculated as:
Initial kg of fudge - kg of fudge left
= 3 kg - 1 3/4 kg
3/1 kg - 7/4 kg
Lowest common denominator = 4
= 12 - 7/4 kg
= 5/4 kg
= 1 1/4 kg
20 minutes left I need help
Answers
Answer:
131.6
Step-by-step explanation:
Multiply.
[x- (3+4i)][x-(3-4)]
Answers
Answer:
(x−3−4)(x+1)
Step-by-step explanation:
Can someone help me with this please? I would also like to know how you solved it so I can understand. Thank you.
The question is in the picture below
Answers
9514 1404 393
Answer:
30 units
Step-by-step explanation:
Make use of the formula for the volume of a sphere. Solve for the radius. (You can solve for the radius before or after you put the numbers in the formula.)
V = (4/3)πr³
36000π = 4/3πr³ . . . . put the numbers in the formula
27000 = r³ . . . . . . . . . multiply both sides by 3/(4π)
30 = r . . . . . . . . . . . . . .take the cube root
The radius of the sphere is 30 units.
Answer:
radius = 30 units
Step-by-step explanation:
The radius of the sphere is 30 units.
Um I’m so confused , help ?
Answers
y = x + 2
y = -5/2x-5
Answers
{ y = -5/2x - 5
x + 2 = -5/2x-5
x = -2
y = -2 + 2
y = 0
(x,y) = (-2,0)
——
Check for solution
{ 0 = -2 + 2
{ 0 = -5/2 (-2) - 5
{ 0=0
{ 0=0
Do you think colonialism /slavery indenturship was a
good or a bad thing for
the islands ?
Answers
Determine if each expression is equivalent to
6 3
7 / 7
Choose Yes or No for each expression.
a. (7)(7 9
[Yes [No
b. 75 + 711
Yes No
c. (75)(7) 74
[Yes No
d. 7 " X 7
Yes No
Yes No
Answers
Answer:
The factor calculator will get all the factors of any positive ... that dividing the product by its factor leaves no remainder. ... Want to check if 7 is a factor of our number.
1/3 ( x - 10) = -4 ???
Answers
Answer:
[tex]x = - 2[/tex]
Step-by-step explanation:
1) Simplify 1/3 ( x - 10) to x-10/3.
[tex] \frac{x - 10}{3} = - 4[/tex]
2) Multiply both sides by 3.
[tex]x - 10 = - 4 \times 3[/tex]
Simplify 4 × 3 to 12.
[tex]x - 10 = - 12[/tex]
4) Add 10 to both sides.
[tex]x = - 12 + 10[/tex]
5) Simplify -12 + 10 to -2.
[tex]x = - 2[/tex]
So, therefor, the answer is, x = -2.
Find the area of a circle whose area equals the half of the sum of the areas of two circles with radil 2 and 3.
13
5
6.5
Answers
Step-by-step explanation:
step 1. a circle with r = 2 has area of (pi)r^2 = (pi)(4) = 4pi
step 2. a circle with r = 3 has area of (pi)r^2 = (pi)(9) = 9pi
step 3. the area, A, of a circle is half the sum of the area of the circles with r = 2 and r = 3
step 4. A = (4pi + 9pi)/2 = 13pi/2 = 6.5(pi).
step 5. the answer is not 6.5 but is 6.5(pi) or 6.5 times pi.
is -5(x+8) equal to -5x-40 pleaseeee i need helppp
Answers
You get this by using the distributive property.
Answer:
yes
Step-by-step explanation:
The distributive property of multiplication over additions is:
a(b + c) = ab + ac
You multiply the number outside the parentheses, the a, by each of the numbers inside the parentheses, the b and the c. Then you add the products.
Now we can do it with your example.
-5(x + 8)
We multiply -5 by x and multiply -5 by 8. Then we add the products and simplify.
-5(x + 8) = -5 * x + (-5) * 8 = -5x + (-40) = -5x - 40
Answer: yes
Skdhauajbsshjzmxjakxjxdj I’m confused
Answers
Answer:
60% i think
Step-by-step explanation:
Can anyone explain how to do this?
Answers
9514 1404 393
Answer:
see attached
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relationships between sides and trig functions. The relevant relations here are ...
Sin = Opposite/Hypotenuse
Cos = Adjacent/Hypotenuse
In your diagram, leg 'a' is opposite angle α and adjacent to angle β. Similarly, leg 'b' is opposite angle β and adjacent to angle α. The hypotenuse is 'c' in all cases.
So, filling the table is a matter of identifying adjacent and opposite legs. You will notice that the sine of α is the cosine of β and vice versa.
There are many cylinders with a height of 9 inches. Let R represent the radius in inches and V represent the volume in cubic inches.
R V
1
2
3
Complete the table relating the radius and volume of cylinders with height 9 inches. Write each volume as a multiple of pi or round to the nearest cubic inch.
Is there a linear relationship between the radius and the volume of these cylinders? Explain how you know.
If a cylinder with height 9 inches and radius (R) s filled with water, it can fill a certain pitcher. How many of these pitchers can a cylinder with height 9 inches and radius 2r fill? Explain how you know.
Answers
Answer:
R V
1 9π in³
2 36π in³
3 81π in³
Step-by-step explanation:
For, r = 1
V = π(1)²9 = 9π in³
For, r = 2
V = π(2)²9 = 4*9π in³ = 36π in³
For r = 3
V = π(3)²9 = 9*9π in³ = 81π in
R V
1 9π in³
2 36π in³
3 81π in³
Prism A is similar to Prism B. The volume of Prism A is 2790 cm3. What is the volume of Prism B?
21, 760 cm3
1360 cm3
680 cm3
340 cm4
Answers
Answer:
D
Step-by-step explanation:
The points (6,6) and (8,h) fall on a line with a slope of
–
3. What is the value of h?
Answers
Answer:
h=3
Step-by-step explanation:
(12-6)/(h--5)=3/4 ~ basic slope equation
6/(h+5)=3/4 ~ simplification
24=3(h+5) ~ multiply both sides by (h+5) and 4 to clear the fractions
24=3h+15 ~ distribute the 3
9=3h ~ subtract 15
h=3 ~ divide by 3
Answer:
Step-by-step explanation:
slope = -3
slope = (h-6)/(8-6) = (h-6)/2 = -3
h-6 = -6
h = 0
I will give a brainliest to the person who has gets the correct answer with an explanation of how you solved it.
I need answer ASAP!
Answers
Answer: [tex]V = 24,416.64m^{3}[/tex]
Step-by-step explanation:
Solve for v by simplifying both sides of the equation, then isolating the variable.
Formula: [tex]v = \frac{4}{3} \pi r^{3}[/tex]
Plugin the variable: [tex]v = \frac{3}{4}\pi (18^{3})[/tex]
Solve:
[tex]v = \frac{4}{3} 3.14 (5,832)[/tex]
[tex]v = 4.18666666(5,832)[/tex]
[tex]V = 24,416.64m^{3}[/tex]
I need help! pls help me
Answers
Answer:
1. DC
2. BC
3. EA
4. ABC
5. BAC, DCA, DAC (i think any of these options work)
6. BAD
7. CDA, ABC
8. 360
Step-by-step explanation:
WILL GIVE BRAINLIEST!
True or False.
A plumber who earns $12 per hour and works 13½ hours has a total earnings of $162.
True
False
Answers
Answer:
True
Step-by-step explanation:
12*13=156
12*0.5=6
156+6=162
Then we put a money sign in front and a . point after the 2 and two 0's and we get $162.00
If x>0 and y=0, Where is the poiny (x,y) located?
Answers
Answer:
x-axis
Step-by-step explanation:
y = 0==> x-axis
Answer:
the answer would be x-axis
Can somebody please help??
Answers
Answer:
-31104
Step-by-step explanation:
They are each Multiplying by 6 so 5184 which also multiply and add the negative sign so you get -31104
the cost of cereal is 35rand for 1 kg , calculate the cost of 25g
Answers
Answer:
7.14*10^-4rand
Step-by-step explanation:
If the cost of cereal is 35rand for 1 kg, this can be expressed as;
35 and = 1kg
To get the cost of 25grams, we can write
25g = x
0.025 kg = x
Divide both expressions
35/0.025 = 1/x
35x = 0.025
x = 0.025/35
x = 7.14*10^-4rand
Hence the cost of 25g is 7.14*10^-4rand
A local boys club sold 156 bags of mulch and made a total of $596. It sold two types of mulch: hardwood for $4.00 a bag and pine bark for $3.75 a bag. How many bags of each kind of mulch did it sell?
Answers
we have two equations. I’ll call hardwood h, and pine bark p.
The number of bags: h + p = 156
The cost of the bags: 4h + 3.75p = 596
Start by solving the first equation for h in terms of p
h = 156 - p
Then substitute that in the other equation for h, and solve for a numerical value of p
4(156-p) + 3.75p = 596
624 -4p + 3.75p = 596
28 = 0.25p
p = 112
Now plug that in to the first equation to get the numerical value of h
h + p = 156
h + 112 = 156
h = 44
Check the math:
4(44) + 3.75(112)
176 + 420 = 596
Kayla's recipe needs 4 cups of milk and 6 cups of grated cheese. What is the ratio of the number of cups of milk to the number of cups of grated cheese in the recipe?
Answers
Answer:
4:6 or 2:3
Step-by-step explanation:
Let me know if this is correct!
