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4 years ago

3x-2=7????????????????

Mathematics

1 answer:

Oliga [24]4 years ago

4 0

Answer:

x=3

Step-by-step explanation:

Step 1: Add two to 7 and inverse the minus 2

3x=7+2 3x=9

Step 2: Divide each number by 3.

3x/3=x and 9/3=3

so x=3

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Daniela recorded the low temperatures during the school day last week and this week. Her results are shown in the table below.

mixas84 [53]

Based on the information given about the temperature, Daniela made her error on step 3 because it says: "Find the ratio of the differences of the means compared to the mean absolute deviation.

<h3>How to illustrate the error?</h3>

From the information given, it van be seen that Daniela recorded the low temperatures during the school day last week and this week and her results are shown in the table.

Here, she didn't find the difference between the today and last week means. She just put the mean as a whole.

Therefore, Daniela made her error on step 3 because it says: "Find the ratio of the differences of the means compared to the mean absolute deviation. This was the error.

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2 years ago

Find the area in square centimeters of the composite shape shown below. Enter only a number as your answer.

Trava [24]

Answer:

136 square cm

Step-by-step explanation:

Area of rectangle = 18x7=126 square cm

Area of triangle = 1/2x(11-7)x(18-13) = 1/2(4)(5) = 10 square cm

126+10 = 136 square cm

7 0

3 years ago

Read 2 more answers

Jemima bought 150 oranges at ¢12 and sold them at 6 for 30gp find the profit or loss

stepan [7]

Answer:

Step-by-step explanation:

To calculate either the profit or loss we must first find the cost price and the selling price

<u>For the cost price</u>

She bought 150 oranges at ¢12

Cost price = ¢ 12.00

<u>For the selling price</u>

She sold 6 at 30 Gp that's ¢ 0.30

If she sold 6 at ¢ 0.30

Then 150 will be 150× 0.3/ 6

Selling price = ¢ 7.50

Since the cost price is higher than the selling price she made a loss

Loss = Cost price - Selling price

Loss = ¢ 12 - ¢ 7.50

Hope this helps you

8 0

3 years ago

In a certain Algebra 2 class of 29 students, 5 of them play basketball and 16 of them play baseball. There are 10 students who p

kkurt [141]

ANSWER
$P(both\:sports)= \frac{2}{29}$

EXPLANATION
Let the number who plays both games be
$x$
Then those who play only basketball
$= 5 - x$

and those who play only baseball
$= 16 - x$

We were given that 10 students play neither sports.

We can then write the following equation,

$(5 - x) + x + (16 - x) + 10 = 29$

This implies that,

$- x + x - x = 29 - 5 - 16 - 10$

This simplifies to,

$- x = - 2$

This gives us,

$x = 2$

Therefore the number of students play both basketball and baseball is 2.

The probability that a student chosen from the class plays both basketball and baseball ball

$= \frac{2}{29}$

5 0

3 years ago

PLEASE HELP! <br><br> Which of the following is a monomial?

ladessa [460]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers