Mathematics High School

can anyone help me? I'm so lost on this question. thanks!! ​

Can Anyone Help Me? I'm So Lost On This Question. Thanks!!

Answers

Answer 1

Answer:

a. -21

b. -16

c. -11

d. -9

Step-by-step explanation:

if x is less than -2, then u have to use the equation 5(x)-1

if x is greater than or equal to -2, then you have to use the equation (x)-9

Answer 2

Answer:

Step-by-step explanation:

This is a ‘piece wise function’ meaning it has different functions depending on the value of the independent variable, x.

So for questions a and b where x<-2 you sub the x value into the top equation, 5x-1.

f(-4)=5(-4)-1=-20-1=-21

f(-3)=5(-3)-1=-15-1=-16

Since the second two x values are not less than -2, you sub the x values into the second equation x-9

f(-2)=-2-9=-11

f(0)=-0-9=-9

Related Questions

25
WY
X
7
Х
24
N
Find the exact value of x.
X =

Answers

9514 1404 393

Answer:

  6 18/25 = 6.72

Step-by-step explanation:

The right triangles are similar, so corresponding sides are proportional.

  ∆XZY ~ ∆ZWY

  XZ/XY = ZW/ZY

  24/25 = x/7

  x = 7(24/25) = 168/25

  x = 6 18/25 = 6.72

help me and fast plz

Answers

Answer and Step-by-step explanation:

The second option (5d = 55)

This works because Arianna wants to divide the amount of dominos to her 5 friends. We do this by dividing 55 by 5.

d will then equal 11 (d = 11).

#teamtrees #WAP (Water And Plant)

2 of 5
Work out the area of the parallelogram.
9m
6m
11m
The diagram is not drawn to scale.
m2

Answers

Step-by-step explanation:

Area of the parallelogram = 1/2 × length of parallel sides × height

= 1/2 × (9+9) ×6

= 54

Got to answer sorry
Bakdhei

please help me with this quadratic equation question..... I will give brainliest if you answer​

Answers

A) Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

P= 3x^2/6x—1

PLZ HELP I WILL GIVE BRIANLY!

In a school, 4 out of every 7 students are girls. if there are 84 students at the school, how many are boys. AND SHOW WORKING​

Answers

Answer:36

Step-by-step explanation:

[tex]\frac{4}{7} =\frac{48\\}{84}[/tex]

for every 7 students there are 4 girls, so for every 84 there must be 48

7*12=84

4*12=48

so, in all 84 students there are 48 girls

so amount of boys=84-48=36

there are 36 boys

whats a reasonable estimate for 529 divided by 23 ( explain your anwser )

Answers

Step-by-step explanation:

First you divide 529 and 23. You can divide 5w9 by 23 in a fraction like this 529/23 on to Desmos scientific calculator or just 529÷23 on a calculator. If it is a decimal, round it up if the tenth, hundredth, or thousandth is 5, 6, 7, 8, 9 or round down if the number is 4, 3, 2, and 1. The answer to 529÷23 is 23. And if you estimate it, it'll be 20. The next part may be a bit confusing but if you estimate 23, you'll get 25.

Then you estimate 529 and 23, you'll get 530 and 20. And if you divide them, you'll get 26.5. And if you estimate that, you'll get 27. So that means is 2 or 7 off from the estimated from the equation 529÷23. So that means the reasonable answer is probably 25 or 27.

Tell me if I'm right or not, and I'm sorry if I'm wrong because I don't know what answer I explained in the two paragraphs I wrote is right or wrong.

Please help me solve this

Answers

Answer:

7)

to work it out:

180-110= 70

because there are two unknown angle we're gonna assume they're both the same amount. So if they are both the same and equal then we need to half 70 which will be equal to the two sided. So. 70/2= 35

So the 2 x's = 35 each

8)

you need to put this all into an equation so:

7x-11 + 5x-2 + 2x-3 = 180 degrees

12x - 9 + 2x-3

10x + 6

Actual answer:

14x-16

Step-by-step explanation:

i ready grade 8 math classroom

please help asap!!!!

Answers

Answer:

use tiger math and use the camera feature it shows steps also I know teachers can be a pain in the butt i go to high school this year so yeah

Someone plz help me I will give brainliest

Answers

Answer:

2.25x2+2x1.00+1.50=8, 10-8 =$2.00

Step-by-step explanation:

Answer:

5.5

Step-by-step explanation:

A scientific calculator has 42 buttons. There are twice as many grey buttons as orange buttons. There are two more white buttons than grey buttons. There twice as many black buttons as white buttons. WRITE AN EQUATION TO CALCULATE HOW MANY BUTTONS OF EACH COLOUR THERE ARE. LET X REPRESENT THE NUMBER OF ORANGE BUTTONS.

Answers

Answer:

x + 2x + 2x + 2 + 4x + 4 = 42

Step-by-step explanation:

Let us assume the number of orange buttons be x

So, the grey buttons be 2x

The white buttons would be 2x + 2

And the black buttons be 2(2x + 2) i.e. 4x + 4

Also the total is 42 buttons

So, the equation is

x + 2x + 2x + 2 + 4x + 4 = 42

What is the answer please

Answers

Answer:

RVS is equal to 180 - 26 degrees, or 154 degrees.

Bonus: I assume the next part of the question asks you to solve for x, where x is equal to that angle.  If so, then the answer is 15:

154 = 10x + 4

150 = 10x

x = 15

Alvin's age is three times Elga's age. The sum of their ages is 104. What is Elga's age?

Answers

Answer: Alvin is 78, Elga is 26

Step-by-step explanation:

Let's first start by naming the variables:

a = Alvin's age

e = Elga's age

a = 3e

a + e = 104

substitute a (in the second equation) as 3e

3e + e = 104

4e = 104

e = 26

Substitute e as 26 into either equation

a = 3(26)

a = 78

Is Noah correct? Yes or no and why

Answers

Answer:

He is not correct.

Step-by-step explanation:

This is because when you subtract -11 and 10.75, you get the answer of -21.75 instead of -0.25. He added the expression instead of subtracting it. Hope it helps

Use the following function rule to find f(1).
f(x) =4(4)4^x+1
f(1)=.......

Answers

83837373hdhdhdjsjsjjsjsjdjdjd

Answer:

f(1)=65

Step-by-step explanation:

PLEASE HELP


Meryl buys new baseball equipment for $2000. The purchase made is with a credit card that has a 19% APR. Meryl makes a $150 payment monthly. How many months will it take Meryl to pay off the balance?

Answers

Answer:

It will take Meryl 15.09 months to pay off the balance.

Step-by-step explanation:

This can be calculated using the formula for calculating the present value of an ordinary annuity as follows:

PV = P * ((1 - (1 / (1 + r))^n) / r) …………………………………. (1)

Where;

PV = Present value or the cost of the new baseball equipment = $2000

P = Monthly payment = $150

r = Monthly interest rate = annual percentage rate (APR) / 12 = 19% / 12 = 0.19 / 12 = 0.0158333333333333

n = number of months it will take Meryl to pay off the balance = ?

Substitute the values into equation (1) and solve for n, we have:

2000 = 150 * ((1 - (1 / (1 + 0.0158333333333333))^n) / 0.0158333333333333)

2000 / 150 = (1 - (1 / 1.0158333333333333)^n) / 0.0158333333333333

13.3333333333333 = (1 - 0.984413453650536^n) / 0.0158333333333333

13.3333333333333 * 0.0158333333333333 = 1 - 0.984413453650536^n

0.21111111111111 = 1 - 0.984413453650536^n

0.984413453650536^n = 1 - 0.21111111111111

0.984413453650536^n = 0.78888888888889

loglinearize both sides, we have:

nlog0.984413453650536 = log0.78888888888889

n = log0.78888888888889 / log0.984413453650536

n = -0.102984160720249 / -0.00682245957075587

n = 15.0948729929724

Rounding to 2 decimal places, we have:

n = 15.09

Therefore, it will take Meryl 15.09 months to pay off the balance.

write the expression that represents y increased by 5%

Answers

Answer:

y·1.05

Step-by-step explanation:

5% = 0.05
since it’s increasing do 1 + 0.05
= 1.05
y=1.05x

Caroline, Colin & Sarah share some money.
Caroline gets 1/9 of the money.
Colin and Sarah share the rest in the ratio 1:3.
What proportion does Sarah get?

Answers

Answer:

2 ÷ 3

Step-by-step explanation:

Let us suppose the money be 90

Since caroline gets 1 by 9 of the money i.e. 10

And, the remaining money would be distributed among Colin and sarah in the ratio of 1:3

So, the remaining money would be

= 90 - 10

= 80

So, the sarah could get

= 80 × 3 ÷ 4 ÷ 90

= 60 ÷ 90

= 20 ÷ 30

= 2 ÷ 3

What is the value of x?

Answers

Answer:12

Step-by-step explanation:

12 hope this helps, i had this same problem

Solve the inequality: x/-3 < -10

Answers

Answer:

x>30

Step-by-step explanation:

x/-3<-10

x<-10*-3

x<30

x>30

Answer:

x > 30

Step-by-step explanation:

Multiply both sides by -3:  This results in x > 30.  Note that the direction of the inequality sign has been reversed, as is required when we multiply or divide an inequality by a negative number.

if I have 2/5 times 9/5 I don't know​

Answers

Answer:

18/25

Step-by-step explanation:

If this answer helped you then please mark it as brainliest so I can get to the next rank

Answer:18/25

Step-by-step explanation:

2. 9. 2x9. = 18

- X. - = ————- It cannot be simplified

5. 5. 5x5=25

solve the equation m-n=4p for m.​

Answers

Answer:

You just need to move m in the first part of the equation, changing the signs when necessary.

M=4p +n

N becomes positive because it has been moved

Pls mark as brainliest

Answer:

m=4p+n

Step-by-step explanation:

Natalia went to the deli and ordered 1/2 pound of sweet ham, 5/6 pound of roast beef, and 2/8 pound of smoked chicken. How many pounds of meat did she order? *

Answers

Answer:

the answer is 1 and 7/12

Step-by-step explanation:

The fee that a driver pays to have automobile insurance is called a deductible
o
A. True
B. False

Answers

true is the correct answer

Which equation has the same solution as x^2+10x+9 = 4

Answers

To factor you must play with factors which multiply to
9

(
1
×
9
,

3
×
3
,

9
×
1
)
(
x
−
9
)
(
x
−
1
)
=
0
Now, solve each factor for
0
:
x
−
9
=
0
x
−
9
+
9
=
0
+
9
x
−
0
=
9
x
=
9
and
x
−
1
=
0
x
−
1
+
1
=
0
+
1
x
−
0
=
1
x
=
1

three decimal numbers that when rounded to the nearest hundredths place will round to the number 6.75.

Answers

Answer:

6.7491, 6.7524, 6.7463

Step-by-step explanation:

Use Coordinate Grid B to write an ordered pair for the given point.

Answers

Answer:

11. G (6,4)

12. H (4,9)

13. I (0,7)

14. J (9,5)

15. K (3,3)

16. L (5,2)

Step-by-step explanation:

eh you know

Answer:

11-(6,4) 12-(4,9) 13(0,7) 14-(9,5) 15(3,3) 16-(5,2)

Step-by-step explanation:

remember first you take the X Axis number that is horizontal, then Y on the Vertical Axis

i like fire i like to watch things burn

can anyone agree

Answers

Answer:

i like to melt straws with my lighter and make it into different shapes

Step-by-step explanation:

Answer:

sameeeeee

Step-by-step explanation:

Identify a, b, and c in the quadratic expression
9 + 6x2 – 5x

Answers

Answer:

wsz=23

Step-by-step explanation:

Answer:

a=6x^2

b=-5x

c=9

Step-by-step explanation:

Can yall help me, please? I Will give brainilest, however u spell it
Which of these best describes π?
The ratio of the radius of a circle to its diameter
The radius of a circle times 3.14
The ratio of the circumference of a circle to its diameter
The ratio of the diameter of a circle to its radius

Answers

Answer:

B. The ratio of the circumference of a circle to its diameter.

Step-by-step explanation:

Pie is the circumstance of a circle.

how many ml in 2 cups of milk​

Answers

473.176 millilitres in 2 cups
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