-7 - 7 ( 8x - 7 ) = - 19 + 5x

Answers

Answer 1

Answer: -7 - 7( 8x - 7 ) = -19 + 5x
⇔ -56x + 49 = -12 + 5x
⇔ -61x = -61
⇔ x = 1

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How to get the base of a parallelogram that has a area of 26 1/2 and a height of 6 5/8?

Answers

the area of all paralellograms can be found by
area=base times height

so
area=26 and 1/2
height=6 and 5/8
convert to improper fractions for ease of use
26 and 1/2=52/2+1/2=53/2
6 and 5/8=48/8+5/8=53/8
so

area=height times base
53/2=53/8 times base
multiply both sides b 8/53 so that we clar the fraction (53/8 times 8/53=424/424=1)
(53 times 8)/(53 times 2)=1base
8/2=1base
4=base

answer is base=4 units

Well you start of in reverse. The formula to find the Area of a parallelogram is A = bh so since you already have the Area all you would have to do is divide the area by the height like so 26 1/2 / 6 5/8 = 4. So to make sure you have the right answer you would just Multiply 4 by 6 5/8 to see if it equals 26 1/2.
4 X 6 5/8 = 26 1/2
I hope this helped

What adds to get negative seven and multiplies to get five

Answers

I have a pair of numbers for you that will do the job.
They're both irrational, so I can't write their exact value.
Here they are, rounded to the nearest thousandth:

- 6.193
and
- 0.807

Kelly enlarged the area of a photograph to 250% of its original size. The original dimensions of the photograph were 5 inches by 7 inches. What is the area of the enlarged photograph, in square inches? A) 71.25 B) 87.5 C) 218.75 D) 3,000

Answers

The area of the enlarged photograph is 87.5 square inches.

What is the area of the enlarged photograph?

The first step is to determine the area of the photograph before it was enlarged. A photograph has the shape of a rectangle. So, the formula for the area of a rectangle would be used.

Area = length x width = 7 x 5 = 35

Area of the enlarged photograph = 2.5 x 35 = 87.5

To learn more about how to calculate the area of a rectangle, please check: brainly.com/question/16595449

Answer:

answer is B) 87.5 squared inches.

Step-by-step explanation:

The original dimensions of the photograph were 5 inches by 7 inches so, the area of the original photograph can be computed as the area of a rectangle:

$Area=(heigh)(base)$ .

$Area=(5)(7)$

$Area=35$ squared inches.

Now, for computing the area of a photograph of 250% the size of the original we use a simple rule of three:

35 squared inches -------- 100%

X squared inches --------- 250%

By this, we have:

$X = ((35)(250))/(100)$

$X = 2.5*35$

$X = 87.5$

From the top of a building, 40 feet above the ground, a construction worker locates a rock at a 12° angle of depression. How far is the rock from the building?

Answers

Answer:

188 m

Step-by-step explanation:

$\tan(12) = (40)/(x) \n x = (40)/( \tan(12) ) \n x = 188$

Answer:

I think that the other answer is WRONG

tan(12) = $(x)/(40)$

x = tan(12)*40 = 8.5

Step-by-step explanation:

$(sin\left(78\right))/(40)=(sin\left(12\right))/(x)$ = 8.5

Is 1 whole 5/10 larger then 1 whole and 2/10?