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vesna_86 [32]
3 years ago
7

Math Question Please Help! 25 pts!!!

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
3 0

Answer:

A) (2+x)/(4+x) × 100 = 75

B) 4

Step-by-step explanation:

2 out of 4

(2+x) out of (4+x)

(2+x)/(4+x) × 100 = 75

(2+x)/(4+x) = 3/4

8 + 4x = 12 + 3x

x = 4

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the product of 7 and a number increased by 3 is equal to twice the number subtracted from 39 find the number
Vanyuwa [196]
Say x is the number

7x +3 = 39 -2x
Add 2x to each side
9x +3 =39
Subtract 3 from each side 
9x =36
Divide by 9 on each side
x=4

Hope this helped
4 0
4 years ago
Read 2 more answers
Can someone please help me!?!
poizon [28]

Answer:

-25 and -4

Step-by-step explanation:

to solve this, you need to use the sum product pattern. this means you're going to take the x factor, 29x and separate it into it's squares.

(x^2+25x)+(4x+100)

then you take out the common factor in each separated equation

x(x+25)+4(x+25)

you see that the items in the parentheses are the same, this means that this is one of the equations you will use when factoring. the rest of the equation that is left out (the common factors) is the other equation

(x+25)(x+4)

to get the zeroes, you set each equation equal to zero and solve

x+25=0           x+4=0

x= -25             x= -4

3 0
3 years ago
Find the value of x.
dezoksy [38]

Answer:

x = 61

Step-by-step explanation:

x and 29 are complementary angles  so they add to 90 degrees

x+29 = 90

Subtract 29 from each side

x+29-29 = 90-29

x = 61

3 0
3 years ago
Read 2 more answers
A. 312<br> b. 317<br> c. 315<br> d. 316
Soloha48 [4]

Answer:

B.) 317

Step-by-step explanation:

100/2 = 50

124/2 = 62

180/2 = 90

634/2 = 317

5 0
3 years ago
Find the diameter of a cone that has a volume of 104.67 cubic inches and a height of 4 inches. Use 3.14 for pi.
Lady bird [3.3K]

Answer:

Step-by-step explanation:

The volume of a cone is

V=\frac{1}{3}\pi r^2h

Filling in what we have:

104.67=\frac{1}{3}(3.14)r^2(4)  and simplifying a bit:

104.67=\frac{1}{3}(12.56)r^2

Multiply both sides by 3 to get:

314.01=12.56r^2

Divide both sides by 12.56 to get:

25.00079618=r^2 and take the square root of both sides to find the radius:

r = 5

If the radius is 5 and the radius by definition is half the diameter, then the diameter is 10 inches.

7 0
3 years ago
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