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2 years ago

What is the value of 5(a-4b) when a= -7 and b= 0.25

Mathematics

1 answer:

Tom [10]2 years ago

5 0

Answer:

-40

Step-by-step explanation:

5(-7-4[0.25])

5(-7-1)

-35-5

-40

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Solve and graph the absolute value inequality: |4x + 1| ≤ 5. a. number line with closed dots on −1.5 and 1 with shading going in

Afina-wow [57]

4x + 1 <= 5 ; x = 1

4x +1 >= -5 ; x = - 1.5

Now we know that x is between -1.5 and 1, so you should shade between -1.5 and 1. The circle will be closed since the equality is =< and =>

The answer is option D

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3 years ago

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Answer:

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2 years ago

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the Royal fruit company produces two types of fruit drinks. the first type is 20% pure juice,the second type is 100% pure fruit

skad [1K]

30 pints of first type and 130 pints of second type drinks must be used to make the mixture.

Explanation

Lets assume, the amount of first type drink is $x$ pints.

As the total amount of the mixture is 160 pints, so the amount of second type drink $= (160-x)$ pints.

The first type is 20% pure juice, the second type is 100% pure fruit juice and the mixture is 85% pure fruit juice. So the equation will be .....

$0.20x+1.00(160-x)= 0.85*160\\ \\ 0.20x+160-x=136\\ \\ -0.80x= -24\\ \\ x=\frac{-24}{-0.80}=30$

So, the amount of first type drink is 30 pints and the amount of second type drink is (160-30)pints =130 pints.

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3 years ago

Matt has a box that is 15 inches long and 5 inches wide. The volume of the box is 225 cubic inches. What is the height of the bo

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The answer is 3 inches

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3 years ago

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What value for C will make the expression a perfect square trinomial x2-7x+c

Tom [10]

Answer:

The value of c is 12.25

Step-by-step explanation:

we know that

A perfect square trinomial is of the form

$(x-a)^{2}=x^{2}-2ax+a^{2}$

In this problem we have

$x^{2}-7x+c$

equate the equations

$x^{2}-7x+c=x^{2}-2ax+a^{2}$

we have

the following equations

$-7x=-2ax$ -----> equation A

and

$c=a^{2}$ -----> equation B

Solve the equation A

$-7x=-2ax$

$7=2a$

$a=3.5$

Solve the equation B

$c=a^{2}$

$c=3.5^{2}=12.25$

therefore

$(x-3.5)^{2}=x^{2}-7x+12.25$

The value of c is 12.25

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3 years ago

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