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3 years ago

-7 - 4 is equivalent to?

Mathematics

1 answer:

liraira [26]3 years ago

7 0

Answer:

-11

Step-by-step explanation:

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Can someone please answer. There is a picture. It is only one question. Thank you so much!

Charra [1.4K]

We can check each of these using the Pythagorean Theorem, $a^2 + b^2 = c^2$
Option A:
$.5^2 + 1.2^2 = 1.3^2

$
.25 + 1.44 = 1.691.69 = 1.69
This option works
Option B
$1^2 + 2^2 = 3^2$
1 + 4 = 9
5 ≠ 9
This option does not work, but let's check the others to make sure
Option C:
$6^2 + 8^2 = 10^2$
36 + 64 = 100
100 = 100
This option works
Option D:
$3^2 + 4^2 = 5^2$
9 + 16 = 25
25 = 25
This option works

So, after doing the calculations, we see that option B does not work

6 0

2 years ago

Help needed asap!!!!!!!

Alexxandr [17]

Answer:

8.2

Step-by-step explanation:

w-x+z

-2.1-(-7)+3.3

-2.1+7+3.3

8.2

Hope this helps!

6 0

2 years ago

Alexandra bought a hat that costs 14 dollars and a watch that costs 6 dollars. At the counter she received a discount. If she pa

leonid [27]

Answer:

It was a 25% discount

Step-by-step explanation:

25 percent of 20 is 5. You subtract 5 from 20 and get 15.

I hope this helps.

6 0

2 years ago

What is the solution to this equation? √x=7 A. x=√ 49 B. x=√7 C.x=14 D. x= 49

IgorLugansk [536]

Let's not look at the option and try to solve it.
√x=7
Let's look at this. Square roots are the number that is multiplied by itself to make that number. For example, 2 is the square root of 4, 3 is the square root of 9.
We need to multiply 7 by itself to find x.
7×7=49
So, D. =49.

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2 years ago

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Nancy wants to make a graph to show the relationship between the temperature of water, in degrees Celsius, and the time, in minu

LenaWriter [7]

Not entirely sure, but it seem the answer could be B.) It will not be spread out vertically across the entire coordinate plane because in step 5, Nancy selected an incorrect scale on the y-axis.

3 0

3 years ago

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