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Leokris [45]
3 years ago
6

Which expression is equivalent to 4 -(-7)? A 7+4, B 4-7, C -7-4, D -4+7

Mathematics
1 answer:
My name is Ann [436]3 years ago
8 0
Hi there! You are subtracting a negative number, which is basically the same thing as adding, because two negatives make a positive. B and C is out, because they do not fit the expression. You are actually adding both numbers and anytime you have to subtract a negative number, you add. When you do basic math, 4 + 7 is 11. Both numbers are negative and D does not work, because you're adding from a negative number. The only answer choice that has the expression is A. The answer is A.
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They numbers 2,5 or ___ are numbers that would make 34,? 21 divisible by 3.
Nikitich [7]

Answer:

The numbers 2, 5 or<u> 27</u>

Step-by-step explanation:

The sum of those three numbers is 34. 2+5+27=34

Oh and 21 divided by 3 is 7

5 0
3 years ago
Jerry is mowing his lawn .it takes him 1/6 of an hour to mow 3/20 of his years .what portion of the yard does jerry now per hour
Ber [7]

Given that Jerry mows 3/20 yards of lawn in 1/6 hour.

Now we have to found how much Jerry can mow per hour.

We know that "work" and "time" are in direct proportion so we can setup the ratio of work and time to easily find the required work.

\frac{Portion \; \; of  \; \; lawn  \; \; mowed}{time}=\frac{\frac{3}{20}}{\frac{1}{6}}

\frac{Portion \; \; of  \; \; lawn  \; \; mowed}{1}=\frac{\frac{3}{20}}{\frac{1}{6}}

Portion \; \; of  \; \; lawn  \; \; mowed=\frac{3}{20}*\frac{6}{1}

Portion \; \; of  \; \; lawn  \; \; mowed=\frac{18}{20}

Portion \; \; of  \; \; lawn  \; \; mowed=\frac{9}{10}

Hence final answer is \frac{9}{10} yards.

4 0
3 years ago
Read 2 more answers
19, 36, 23, 42, 21, 33, 23, 24, 36, 42, 23, 37, 37, 33, 17
LekaFEV [45]

What is this suppose to mean

3 0
2 years ago
What is the value of x? round to the nearest hundredths place: <br> 0.45(x + 1.6) + 5x = 18
KatRina [158]

Answer:

3.600

Step-by-step explanation:

0.25(x+1.6)+5x=18

Open the bracket first

0.25x+0.72+5x=18

Collect like terms

0.25x+5x=18-0.72

5.25x=18.72

Divide both sides by 5.25

x=3.566~3.600(nearest hundredth)

8 0
3 years ago
Read 2 more answers
PLEASE HELP The y-intercept of the equation y = 12x - 8 is 8. True False
stira [4]

Answer: False!

This equation is in slope - intercept form, where y = mx + b. B is the y - intercept and m is the slope. They got the location of the y - intercept right, but they forgot to add the negative. It's actually -8.

Hope this helps!

3 0
3 years ago
Read 2 more answers
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