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andrezito [222]
3 years ago
5

A student earns $70 over the summer and he spends 1/5 of the total amount on movies. He then spends 1/2 of the remaining money o

n school clothes.
how much money is left?
Mathematics
1 answer:
stira [4]3 years ago
3 0

Answer:

$28

Step-by-step explanation:

1/5 of $70 is 14 . so $70 - $14 is $56

1/2 of $56 is $28

Hope this helps x

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Find the gradient of the line segment between the points<br> (-1,2) and (-2,3).
Svetach [21]

Answer:

The gradient of the line segment between the two points is -1

Step-by-step explanation:

The gradient of the line segment between two points is also known as the slope,

We  can find this by using the formula; y₂ - y₁ /  x₂ - x₁

The points given to us are;(-1,2) and (-2,3).

This implies x₁ = -1  ,     y₁=2         x₂ =  -2        y₂= 3

We can now proceed to insert our values into the formula;

Gradient = y₂ - y₁ /  x₂ - x₁

                = 3 - 2  /  -2-(-1)

                 = 1  /  -2 + 1

                  =1/-1

Gradient = -1

Therefore the gradient of the line segment between the two points is -1

8 0
3 years ago
An earthquake registered 7.4 on the Richter scale. If the reference intensity of this quake was 2.0 × 1011, what was its intensi
dexar [7]
32.0 you just add the first and last numbers then muptily  the middle number by you anwser and divdie your 2 anwsers to gether
5 0
3 years ago
- 3 + 3x = 2x – 13 <br><br> I have to use more characters...
DENIUS [597]

- 3 + 3x = 2x – 13

Bring -3 to the right side of the equation by adding 3 to both sides

(- 3 + 3) + 3x = 2x – 13 + 3

0 + 3x = 2x - 10

3x = 2x - 10

Bring 2x to the other side by subtracting 2x to both sides

3x - 2x = 2x - 2x - 10

x = -10

Check:

-3 + 3(-10) = 2(-10) - 13

-3 + (-30) = -20 - 13

-33 = -33

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0
3 years ago
Please math , help
Furkat [3]

Answer:

As both the mean and standard deviation are in the desired ranges, the tool passes the technical control.

Step-by-step explanation:

Mean of the batch:

The mean of the batch is the sum of all values divided by the number of items. So

M = \frac{199+204+201+197+195+204+200}{7} = 200

Mean in the desired interval.

Standard deviation:

Square root of the sum of the difference squared between each term and the mean, divided by the number of items. So

S = \sqrt{\frac{(199-200)^2+(204-200)^2+(201-200)^2+(197-200)^2+(195-200)^2+(204-200)^2+(200-200)^2}{7}} = 1.18

As both the mean and standard deviation are in the desired ranges, the tool passes the technical control.

7 0
3 years ago
which is an algebraic equation that represent s the following word problem that shows how many bonus points , s, Samantha earned
Anna35 [415]
A = 15 a = athena, s = samantha, b = bonus points
s = b + a


s = b + 15
7 0
3 years ago
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