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2 years ago

Can someone PLEASE help with this

Mathematics

1 answer:

Afina-wow [57]2 years ago

5 0

Answer: 226.19

Step-by-step explanation:

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A picture has a height that is 2 times it’s width . It is to be enlarged to an area of 128 in 2

morpeh [17]

9514 1404 393

Answer:

8 in by 16 in

Step-by-step explanation:

In your equation, we presume that x represents the width. Solving for x, we have ...

2x² = 128 . . . . . . given equation

x² = 64 . . . . . . . . divide by 2

x = √64 = 8 . . . . square root

The enlargement will be 8 inches by 16 inches.

8 0

2 years ago

Solve the right triangle. Round decimal answers to the nearest tenth.

ZanzabumX [31]

Answer:

c=√a²+b²

Step-by-step explanation:

You can use this equation to solve it.

8 0

2 years ago

Solve; 5(x+1)=6.4−2.7x 3(y−1.5)=9.9–4.2y 0.9y−1.8=0.3(y−4)

Dmitrij [34]

—
1. Answer x=0.18

2. Answer y = 2

3. Answer y = 1

7 0

3 years ago

A custom rectangular tabletop has a length that is twice it’s width, and the tabletop measures 76 inches on its diagonal. What a

Sunny_sXe [5.5K]

Answer:

The dimensions of the tabletop: Length= 67.976... inches and Width= 33.988... inches and the perimeter will be 203.929... inches.

Step-by-step explanation:

Suppose, the width of the rectangular tabletop is $x$ inch.

As the tabletop has a length that is twice it’s width, so the length will be: $2x$ inch.

The tabletop measures 76 inches on its diagonal.

Formula for length of diagonal of rectangle: $d=\sqrt{l^2+w^2}$

So, the equation will be..........

$76=\sqrt{(2x)^2+ x^2}\\ \\ 76=\sqrt{4x^2+x^2} \\ \\ 76=\sqrt{5x^2} \\ \\ 5x^2= 76^2= 5776\\ \\ x^2= \frac{5776}{5}=1155.2 \\ \\ x= \sqrt{1155.2} =33.988...$

Thus, the width of the tabletop is 33.988... inches and the length will be: (2×33.988...) = 67.976... inches.

The perimeter will be: 2(33.988...+ 67.976...) inches = 203.929... inches.

5 0

2 years ago

if the perimeter of the rectangle was known to be 90 in what would the value of x be in order for this to be true

Fofino [41]

Answer:

x = 30 in

Step-by-step explanation:

length of rectangle is (2/3)x + 10; width is (1/3)x + 5;

perimeter is 90 in; find x:

P = 90 in = 2(2/3)x + 2(10) + 2(1/3)x + 2(5), or

90 in = (6/3)x + 30 in

Solving for x, we get (2)x = 60 in, or x = 30 in

8 0

3 years ago