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Paladinen [302]
3 years ago
13

PLZ HELP ME MARK AS BRAINLY HOWEVER ANSWERS FIRST!!!!

Mathematics
1 answer:
Darina [25.2K]3 years ago
8 0

Answer:

115

Step-by-step explanation:

When multiplying a fraction by a fraction, you multiply the numerator by the numerator and same with the denominator. 13 times 4 =52,  7 times 9=63, 52+63=115.  Hope this helps!

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Five times a number decreased by eight is at most ten more than twice the number
Allisa [31]
5n-8 \leq 2n+10 \\ 5n-8+8 \leq 2n+10+8 \\ 5n \leq 2n+18 \\ 5n-2n \leq 2n+18-2n \\ 3n \leq 18 \\  \frac{3n}{3} \leq  \frac{18}{3} \\ n \leq 6
8 0
3 years ago
PLS HELP!! I NEED TO FIND THE SURFACE AREA OF THIS CYLINDER!!!!!
MArishka [77]

Answer:

923.63

Step-by-step explanation:

the formula for the surface area of a cylinder is 2πrh + 2πr^2 ( i just looked it up lol)

6 0
3 years ago
Simplify 0.75 : 2 5/16​
icang [17]

To start this is a ratio, and the goal is to get at least 1 to be a whole number so first lets get the number below 1 to 1.

0.75 : 2 5/16 ---> (x1.3333 on both sides) ---> 1 : 3 1/12.

Next, if needed for your answer, lets get the other number to be a whole number as well. We can do this my multiplying both sides by 12 since the fraction on 3 1/12 is 1/12.

1 : 3 1/12 --> (x12 on both sides) ---> 12 : 37

Your final answer will either be 1 : 3 1/12 or 12 : 37, depending on the formatting expected for your homework assignment.

4 0
3 years ago
Which ordered pairs are solutions to the inequality 2x+y>−4?
hichkok12 [17]

we will proceed to resolve each case to determine the solution

we have

2x+y>-4

y>-2x-4

we know that

If an ordered pair is the solution of the inequality, then it must satisfy the inequality.

<u>case a)</u> (5,-12)

Substitute the value of x and y in the inequality

-12>-2*5-4

-12>-14 ------> is True

therefore

the ordered pair (5,-12) is a solution of the inequality

<u>case b)</u> (-3,0)

Substitute the value of x and y in the inequality

0>-2*-3-4

0>2 ------> is False

therefore

the ordered pair (-3,0) is not a solution of the inequality

<u>case c)</u> (-1,-1)

Substitute the value of x and y in the inequality

-1>-2*-1-4

-1>-2 ------> is True

therefore

the ordered pair(-1,-1) is a solution of the inequality

<u>case d)</u> (0,1)

Substitute the value of x and y in the inequality

1>-2*0-4

1>-4 ------> is True

therefore

the ordered pair (0,1) is a solution of the inequality

<u>case e)</u> (4,-12)

Substitute the value of x and y in the inequality

-12>-2*4-4

-12>-12 ------> is False

therefore

the ordered pair (4,-12) is not a solution of the inequality

<u>Verify</u>

using a graphing tool

see the attached figure

the solution is the shaded  area above the line

The points A,C, and D lies on the shaded area, therefore the ordered pairs A,C, and D are solution of the inequality


7 0
4 years ago
Read 2 more answers
Please help me answer this question!!!!!
AleksAgata [21]

Answer:

h = 13ft

Step-by-step explanation:

We can assume that the triangles are similar, so:

5 ft is to 26 ft as 2.5 ft is to h ft.

Which can be set up like this:

\frac{5}{2.5}=\frac{26}{h}

We can cross multiply:

5h = (2.5) (26)

5h = 65

h = 13ft

6 0
3 years ago
Read 2 more answers
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