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3 years ago

15

Wallace has a $50 bill. Pizza pies cost $12.25 each. If p represents the number of pizzas he buys, write an expression for the c

hange he receives.

1 answer:

elena-14-01-66 [18.8K]3 years ago

6 0

He buys 4 pizzas oml that’s 20 characters now

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Solve for b.<br> -b - 19 = -3b – 9

8090 [49]

Answer:

b=5

Step-by-step explanation:

-b - 19 = -3b – 9

Add 3b to each side

-b+3b - 19 = -3b+3b – 9

2b -19 = -9

Add 19 to each side

2b-19+19 = -9+19

2b = 10

Divide by 2

2b/2 =10/2

b=5

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3 years ago

Kiera operates an orange juice stand. On Monday she used 1/2 of a bag of oranges. On Tuesday she used 3/4 as many oranges as on

Alecsey [184]

Answer:

I think the answer is 3/8 bight i might be wrong.

Step-by-step explanation:

3/4*1/2=3/8

All I did was multiply the two fractions.

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3 years ago

Do both of them please

Neko [114]

Answer:

$ 333

Step-by-step explanation:

a) 33 + m*1 = 33 + m

b) m = 300 miles

33 + m = 33 + 300

= $ 333

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3 years ago

In a video game, a bird is flung on a sling shot and follows a parabolic path. The path of the bird can be modeled by the equati

Novay_Z [31]

Answer:

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

Step-by-step explanation:

we have

$h=-16t^2+55t+4$

This is a vertical parabola open downward

The vertex represent a maximum

where

h is the height of the bird

t is the amount of time, in seconds, the bird had been in the air

For h=40 ft

substitute in the quadratic equation

$40=-16t^2+55t+4$

$-16t^2+55t+4-40=0$

$-16t^2+55t-36=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+55t-36=0$

so

$a=-16\\b=55\\c=-36$

substitute in the formula

$x=\frac{-55\pm\sqrt{55^{2}-4(-16)(-36)}} {2(-16)}$

$x=\frac{-55\pm\sqrt{721}} {-32}$

$x=\frac{-55+\sqrt{721}} {-32}=0.88\ sec$

$x=\frac{-55-\sqrt{721}} {-32}=2.56\ sec$

therefore

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

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3 years ago

Give me the solution of this algebra<br> 1) a^2 + 3a + 1

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Answer:

slader app helps alot

Step-by-step explanation:

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3 years ago