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uysha [10]
3 years ago
13

Solve the equation what is X+7=-8

Mathematics
1 answer:
tino4ka555 [31]3 years ago
6 0

Answer

-15 + 7 = -8

Explanation

-15 + 7 = -8

You might be interested in
2. Calculate the energy in joules of a photon whose frequency is 7.55×1014 Hz.
igomit [66]
The energy of a photon is given by
E = h × v

where:
E is the energy in joules/photon
'h' is the constant 6.63 × 10⁻³⁴
'v' is the frequency 7.55 × 10¹⁴

Substitute 'h' and 'v' into the formula we have

E = (6.63×10⁻³⁴) × (7.55×10¹⁴)
E = (6.63×7.55) × (10⁻³⁴ × 10¹⁴)
E = 50.0565 × 10⁽⁻³⁴⁺¹⁴⁾
E = 50 × 10⁻²⁰ joules/photon
8 0
3 years ago
1. What percent of 58 is 18?
malfutka [58]

In order to find the answer you will have too divide 58 by 18 and then divide what you get from that by 100 to get your answer.

100%/x%=58/18

(100/x)*x=(58/18)*x    

100=3.22222222222*x      

(3.22222222222) to get x

100/3.22222222222=x

x=31.0344827586

Therefore your answer is "31%."

Hope this helps.

8 0
3 years ago
A student wondered if more than​ 10% of students enrolled in an introductory Chemistry class dropped before the midterm. He noti
Ilia_Sergeevich [38]

Answer:

C.It is a​ one-tailed test since the alternative hypothesis states that the parameter is greater than the hypothesized value.

Step-by-step explanation:

Let p be the percentage of students enrolled in an introductory Chemistry class dropped before the midterm. Then null and alternative hypotheses are:

H_{0}: p=10%

H_{a}: p>10%

The alternative hypothesis states that the parameter is greater than the hypothesized value.

3 0
3 years ago
please someone help I know the answer but I don't know how to place it on the scales below. (15 Points)
guapka [62]

Given:

a. 35% of 150 g

b. 113% of $55

To find:

The correct values for the given blanks.

Solution:

a. 35% of 150 g

Here, the percent part is 35% and percent whole is 100%.

35% of 150 g is:

\dfrac{35}{100}\times 150=52.5

So, the number part is 52.5 g and the whole number is 150 g.

Therefore, the percent part is 35%, number part is 52.5 g and the whole number is 150 g.

b. 113% of $55 g

Here, the percent part is 113% and percent whole is 100%.

113% of $55 is:

\dfrac{113}{100}\times 55=62.15

So, the number part is $62.15 and the whole number is $55.

Therefore, the percent part is 113%, number part is $62.15 and the whole number is $55.

6 0
3 years ago
Find the other endpoint (E2) given the midpoint (2,2) and<br> endpoint 1 (-3,-2)
Amiraneli [1.4K]

Answer:

(-\frac{1}{2},0)

Step-by-step explanation:

3 0
3 years ago
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