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3 years ago

Evaluate each expression if a = 1/2 and b=5 8a + 2b b - 2a

Mathematics

1 answer:

SVEN [57.7K]3 years ago

6 0

Answer:

8a + 2b is 14 and b - 2a is 4 1/2

Step-by-step explanation:

divide 8 by 2 to get 4 and multiply 2 times 5 to get 10, then add 10 + 4

If b=5 and a is 1/2 then 5 - 1/2 = 4 1/2

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What is the cost of 8 cans of tomato sauce at 48.25 a can?

Delvig [45]

Given facts:
8 cans of tomato sauce
Cost of a can of tomato sauce: $48.25

What the question asks:
What is the total cost of 8 cans of tomato sauce at $48.25 per can?

Operations used:
Multiplication (Since you want to find the cost for 8 cans of tomato sauce, you will want to multiply the individual cost of a can by the total amount of cans.)

Number sentence:
$8 \times 48.25$

Answer:

$8 \times 48.25 = \boxed{386}$

8 cans of tomato sauce will cost a total of $386.

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3 years ago

Jasmine divided her garden answer six equal parts she planted flowers and 56 of the garden how many parts of the whole garden th

patriot [66]

I think the answer is 9 with 2 remaining

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3 years ago

Find the exact values of the following, giving your answers as fractions.

barxatty [35]

Answer:

a) 1/8

b) 1/9

c) 1/10,000

Step-by-step explanation:

When a number is raised to a negative exponent, that means that the answer will be less than one. The format is:

x^-y = 1/x^y (i apologize, exponents on here are really messy)

Ok so for a, you get 1/2^3. 2^3 = 8, so your resulting fraction is 1/8

b). 1/3^2. 3^2 = 9, so your resulting fraction is 1/9

c). 1/10^4. 10^4 = 10,000, so your resulting fraction is 1/10,000.

Sorry fractions and exponents don't work well on my computer. Hope this helps!

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3 years ago

PLEASE HELP ASAP A point at (3, 2) is rotated 180° clockwise about the origin.

Sloan [31]

(-3,-2)
You just change the signs

5 0

3 years ago

Read 2 more answers

The temperature at 5 p.m. is 20°F. The temperature at 10 p.m. is -5°f. How many degrees did the temperature fall?

NARA [144]

Hello!

You don't have to worry about the time when the temperature drops.

I believe your answer is 25°F.

If it is 20°F outside, then it takes 20°F to drop the zero. Now, since we are at zero now, and we are trying to get to -5°F. Then all we have to do is add 5 plus 20 and that is 25°F.

I hope it helps!

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3 years ago