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Ilia_Sergeevich [38]
4 years ago
8

When seven times a number is deceased by 3, the result is 25. What is the number?

Mathematics
2 answers:
zepelin [54]4 years ago
6 0

7n-3= 25

7n-3(+3)= 25(+3)

(7n= 28)/7

n=4

fiasKO [112]4 years ago
4 0

seven times a number: 7x

is deceased by 3: -3

the result is 25: = 25

Equation:

7x - 3 = 25

Steps:

7x - 3 = 25

7x - 3 + 3 = 25 + 3

7x = 28

7x/7 = 28/7

x=4

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Answer:

4.The product is greater that 3/8 and less than 7/2.

Step-by-step explanation:

The product of 3/8 and 7/2 is:

\frac{3}{8} * \frac{7}{2} \\\\= \frac{21}{16} = 1\frac{5}{16}

This number is greater than 3/8.

It is greater than 1/8 but not less than 1/2.

This number is less than 7/2.

This number is greater than 3/8 and it is less than 7/2.

Hence, the correct options is 4.

7 0
3 years ago
graph the solution to the following system of inequalities y<-2x+7, y greater than or equal to 2x - 3 ​
Alex777 [14]

Answer:

See attached diagram

Step-by-step explanation:

Graph the solution of the inequality y First, draw the dotted line y=-2x+7 (dotted because the sign of the inequality is <). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (red part on the diagram).

Graph the solution of the inequality y\ge 2x-3. First, draw the solid line y=2x-3 (solid because the sign of the inequality is ≥). Then determine wich part of the coordinate plane should be shaded. Since the origin's coordinates satisfy the inequality, then this point should belong to the region (blue part on the diagram).

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6 0
3 years ago
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Kaylis [27]

Answer:

This is a rectangle

Step-by-step explanation:

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6 0
3 years ago
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Westkost [7]

Answer: The best estimate for the amount of money she saves to buy clothes = $ 562.5

Step-by-step explanation:

Given: Breanna saves 75% of her earnings to buy new school clothes.

Earnings for Breanna = $ 750

The amount of money she saves to buy clothes = 75% of 750

= 0.75 x  750   [75%= 0.75]

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Hence, the best estimate for the amount of money she saves to buy clothes =  $ 562.5

5 0
3 years ago
Use mental math to solve the equation w - (-3) = 7 please help
tester [92]

w-(-3)=7

Pretend that there is a -1 in front of the bracket

w-1(-3)=7

Mutiply the bracket by -1

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w+3-3=7-3

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Answer: w=4

8 0
3 years ago
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