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2 years ago

11

how do you find the false of x for 7x+3? I’m sorry I’m not too smart when it comes to math. I mean I know you divide the 7 on ea

ch side but how do you do 3 decided by 7 to get X when it comes out as a decimal? I’m sorry just pls help :(me

1 answer:

stiv31 [10]2 years ago

8 0

Hi are you trying to get x by itself?

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Which statement is true?

AfilCa [17]

Answer:

C

Step-by-step explanation:

A) 258 x 8145 + 6 = 2101416

And

258 x 8145 = 2101416

So it is NOT the answer because 258 x 8145 + 6 is not 6times than the value of 258 x 8145

B) 6435 x (75452 + 4) =485559360

And

6435 x 75452 = 485533620

So it is NOT the answer beacuse 6435 x (75452 + 4) is not 4 more than the value of 6435 x 75452

D) 9,035 x (432 − 3) = 3876015

AND

9,035 x 432 = 3903120

So it is NOT the answer because 9,035 x (432 − 3) is not 3 less than the value of 9,035 x 432

THE ANSWER IS C BECAUSE :

7,684 − 4,322 = 3362

AND

2 x (7,684 − 4,322) = 6724

And when we do

6724 ÷ 3 =3362

So 7,684 − 4,322 is half value of 2 x (7,684 − 4,322)

4 0

2 years ago

Two pumps can fill a pool tank in 26 hours when working together. Alone, the second pump takes twice as long as the first to fil

vesna_86 [32]

Answer:

Step-by-step explanation:

Let's say

d1 the outflow of the first pump

d2 the outflow of the second pump

V=1 is the volume of the tank

Since the second pump takes twice as long as the first to fill the tank,

$V=1=k*d_1*t\\V=1=k*d_2*(2*t)\\==>\ d_1=2*d_2\\\\$

Two pumps can fill a pool tank in 26 hours when working together:

$V=1=k*(d_1+d_2)*26 \ ==> V=1=k*(3*d_2)*26 \ ==>k=\dfrac{1}{3*d_2*26} \\\\$

How long does it take the first pump alone to fill the tank:

$V=1=k*d_1*t=k*2*d_2*t=k*3d_2*26\\2*t=3*26\\\\t=\frac{3*26}{2} \\\\t=3*13\\\\t=39\ (hours)$

4 0

3 years ago

Please help me out it would be greatly appreciated

Dmitry_Shevchenko [17]

The area of the given parallelogram is 120.

Step-by-step explanation:

Step 1:

The parameters needed to determine the area of a parallelogram are the base length and height.

The base length of this parallelogram is 15 inches while its height is 8 inches.

The area of a rectangle is determined by multiplying the base length with the height.

Step 2:

The area of the parallelogram $= (b)(h).$

Here the base length is 15 inches and the height is 8 inches.

The area of the parallelogram $=(15)(8) = 120.$

So the area of the given parallelogram is 120.

5 0

2 years ago

Formula of interior and exteiror angle and how much interior + exterior equals to

VLD [36.1K]

Answer:

The formula for calculating the size of an interior angle is: interior angle of a polygon = sum of interior angles ÷ number of sides. The sum of exterior angles of a polygon is 360°. The formula for calculating the size of an exterior angle is: exterior angle of a polygon = 360 ÷ number of sides.Properties of exterior angles. The sum of exterior angle and interior angle is equal to 180 degrees.

Step-by-step explanation:

I asked Siri...

5 0

2 years ago

Y varies with square or x. x=3 y=16 find the equation of variation

Vladimir [108]

Y=16x²/9 ....................................

7 0

3 years ago