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lesya [120]
3 years ago
14

Solve each equation. Check your solution. 3(n - 7) = -30

Mathematics
2 answers:
weqwewe [10]3 years ago
6 0
I agree with n as -3 & 3(-3-7)=-30
uranmaximum [27]3 years ago
5 0
3(n-7)=-30
3n-21= -30
3n = -9
n= -3
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What is the value of x ?
jolli1 [7]

Answer:

x=3

Step-by-step explanation:

180-120=60

60+15x+5+22x+4=180

69+37x=180

37x=111

x=3

4 0
3 years ago
The difference between the squares of two consecutive numbers is 23. what are the two numbers?
Ksju [112]

(x+1)^2-x^2=23

x^2+2x+1-x^2=23

2x+1=23

2x=22

x=11

11^2 = 121

x+1 =12

12^2=144

144-121 = 23

4 0
3 years ago
If tatianna works 3hrs a day on school days and make $123.75 a week what is her hourly rate?​
madreJ [45]

<u><em>Answer:</em></u>

Her hourly rate is $8.25

<u><em>Explanation:</em></u>

Tatianna works 3 hours a day on school days and makes a total of $123.75 in a week

<u>We know that:</u>

There are 5 school days in a week

<u>We are given that:</u>

She works for 3 hours a day each of those days

<u>Therefore:</u>

Total number of hours worked = hours worked daily * number of days

Total number of hours worked = 3 * 5 = 15 hours in a week

<u>The equation used to calculate Tatianna's earnings is:</u>

Amount she makes in a week = Total number of hours worked * hourly rate

<u>Now, we substitute with the givens to get the hourly rate as follows:</u>

Amount she makes in a week = Total number of hours worked * hourly rate

123.75 = 15 * hourly rate

Hourly rate = $8.25

6 0
3 years ago
A boat starts from a port and moves 12 miles north and then moves 5 miles east. what is the present distance of the boat from th
disa [49]
If you sketch the path of the boat, you will form a right triangle towards the port. The distance from the port to the present position is the hypotenuse since it is opposite from the right angle formed by the 12 miles north and 5 miles east movement. Since it is a right triangle, use the Pythagorean Theorem to solve the hypotenuse.

Solution:

h² = o² + a²
h² = 12² + 5²
h² = 144 + 25
h² = 169
√h² = √169
h= 13

The present distance of the boat from the port is 13 miles.
7 0
3 years ago
1. The graph of quadratic function h is shown below. What are the zero(s) of h?
aksik [14]

Answer:

I dont see where you said its shown below..repost please =)

6 0
1 year ago
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