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3 years ago

PLEASE HELP!!! Evaluate the expression when b=4 and y= -3-b+2y

Mathematics

2 answers:

oee [108]3 years ago

7 0

Answer: -10

Step-by-step explanation: All you have to do is plug the values into the equation. -4+2(-3). Then you solve the equation using PEDMAS.

1. -4+2(-3)

2. -4+(-6)

3.-4-6

4.-10

Anarel [89]3 years ago

4 0

Answer:

Step-by-step explanation:

-b + 2y

b = 4

and

y = 3

then:

-b + 2y = -4 + 2*6 = -4 + 12

= 8

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3 years ago

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Leviafan [203]

Answer:

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Step-by-step explanation:

Circumference is the perimeter of a circle. It can be found using the formula:

$c= \pi d$

However, we are given the radius.

The radius measures from the center to the edge of the circle.
The diameter measures from edge to edge through the center.
So, the diameter is twice the radius, or d=2r

The formula can be rewritten as:

$c= \pi 2 r$

We know the circumference is 25.12 inches.

$25.12 \ in = \pi 2r$

Let's round pi to 3.14

$25.12 \ in = (3.14) 2r$

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Divide both sides by 3.14 because the inverse of multiplication is division.

$25.12 \ in / 3.14= (3.14 ) 2r / 3.14$

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The radius of the disc is 4 inches.

6 0

3 years ago

Write two subtraction equations to show 15-7.

kirill [66]

15 - 7 = 8
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4 years ago

8x + 5y = 22 -8x + y = 14

finlep [7]

Answer:

Y = 6 X=-1

Step-by-step explanation:

Add the numbers 8x+-8x=0. 5y+y=6y. 22+14=36
So that means 6y=36. So Y would equal 6
Substitute the values it one of the original equations. 8x + 5(6) =22. 8x+30=22
Minus 22 from both sides.
That would give you 8x=-8
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3 years ago

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During the summer , you want to earn at least $150 per week. You can earn$10 per hour working for a farmer, and $5 per hour baby

almond37 [142]

X = nr. hrs working for a farmer;
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x + y <= 25;
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a) Solve the system => one of the solution is x =5; y = 20(babysitting)
b) 10 + 12 =22 <= 25; 10*10 + 5*12 = 160 >=150.

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4 years ago

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