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3 years ago

A 10-pound sack of flour costs $8.

Mathematics

2 answers:

Sphinxa [80]3 years ago

6 0

Answer:

Step-by-step explanation:

If a ten pound sack of floyr costs $8.00, then all you have to do to find the cost of a 40 pound, is multiply 10 by 4 to get 40. Then do the same to the 8> multipky by 4 to get 32.

X=32

algol133 years ago

3 0

Answer:

its b hope this helps

Step-by-step explanation:

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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

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

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

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

3 0

3 years ago

Which inequality describes the graph below?

Ainat [17]

Answer:

X>_1 and x<_7

Step-by-step explanation:

3 0

3 years ago

Can u help me with this problem

krok68 [10]

Answer:

$4.20

Step-by-step explanation:

y = .05x (using stat on calculator)

y = .05(84)

$4.20

3 0

4 years ago

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Joan has a prescription for 100 Theophylline capsules. Joan informs the pharmacist that she only has enough money to purchase ¼

balandron [24]

Answer:

25 capsules.

Step-by-step explanation:

We are told that Joan has a prescription for 100 Theophylline capsules. Joan informs the pharmacist that she only has enough money to purchase ¼ of the prescription today.

To find the number of capsules that Joan will pay for today, we will find 1/4 of 100.

$\text{The number of capsules that Joan will pay for today}=\frac{1}{4}\times 100$

$\text{The number of capsules that Joan will pay for today}=25$

Therefore, Joan will pay for 25 capsules today.

5 0

3 years ago

Canela has 96.4 yards of rope to make rope bowls. She

Sladkaya [172]

Answer:

5.2 yds/bowl

Step-by-step explanation:

she used 96.4 - 18.4 = 78 yards for 15 bowls

78 yards / 15 bowls = 5.2 yds/bowl

7 0

2 years ago