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2 years ago

Jessica had 140 to spend on 8 books. After buying them she had 12 dollars. How much did each book cost?

Mathematics

1 answer:

Rashid [163]2 years ago

8 0

Answer:

each book was $16

Step-by-step explanation:

140-12=128 divided by 8 = 16

hope this helps!

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Evaluate the expression

Natalka [10]

Answer: -5

Step-by-step explanation:

Multilpy $\frac{1}{4}$ x (-5 + 5 x (3)

Calculate $\frac{1}{4}$ x (-5 - 15)

- $\frac{1}{4}$ x 20

= -5

6 0

2 years ago

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Please help, this will just take a minute of your time ❤︎ (literally)<br>(Discriminant Worksheet)

igomit [66]

Answer:

$\large\boxed{x=-\dfrac{7-\sqrt{97}}{4}\ \vee\ x=-\dfrac{7+\sqrt{97}}{4}}$

Step-by-step explanation:

$ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta0,\ \text{then an equation has two solutions:}\ x=\dfrac{-b\pm\sqrt\Delta}{2a}\\\\\text{We have:}\\\\-2x^2-7x+10=4\qquad\text{subtract 4 from both sides}\\\\-2x^2-7x+6=0$

$a=-2,\ b=-7,\ c=6\\\\\Delta=(-7)^2-4(-2)(6)=49+48=97>0\\\\\sqrt\Delta=\sqrt{97}\\\\x=\dfrac{-(-7)\pm\sqrt{97}}{2(-2)}=\dfrac{7\pm\sqrt{97}}{-4}=-\dfrac{7\pm\sqrt{97}}{4}$

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3 years ago

Variable Terms in 3x + 2 – 10 – 3x

ratelena [41]

Answer:

Step-by-step explanation:

because its the varible term

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2 years ago

Locate the mean of 2046,971,3113,and 1850.

Debora [2.8K]

To find the mean, you have to add all the numbers then divide it by how many numbers there are.

In this case, you'll need to add all those numbers and divide it by 4.
$2046+971+3113+1850=7980\\7980\div4=1995$

The mean is 1995.

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3 years ago

When Bunny and Walter came home from practice, there was a note from their mother sitting on top of a pizza box. “Had to run to

leva [86]

9514 1404 393

Answer:

3/8 pizza

Step-by-step explanation:

If 1/4 of the 4/4 of the pizza was gone, 3/4 remained. When that is split in half, each half is (3/4)(1/2) = 3/8 of the pizza.

Each gets 3/8 of the pizza.

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3 years ago