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3 years ago

Solve for a. 7a + 18 = 102 a =

Mathematics

2 answers:

Virty [35]3 years ago

6 0

Answer:

Step-by-step explanation:

Inessa [10]3 years ago

3 0

7a+18=102
7a= 102-18
7a= 84
a = 84/7= 12

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What’s equivalent to x^-2

lesantik [10]

1/x^2. Remember that any number raised to a negative power is the reciprocal.

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4 years ago

The square below has an area of 22 - 10.2 + 25 square meters.

ZanzabumX [31]

Answer:

x = 1.89

Step-by-step explanation:

Solve 22 - 10.2 + 25 to get 36.8 as the square's area.

Set up the equation 36.8 = (-10x + 25)^2 to represent the relationship between one side length and the area.

Reverse the equation to solve for x! Find the square root of both sides to cancel out the exponent. This gets you: 6.07 = -10x + 25.

Subtract 25 from both sides, then divide by -10 to get x by itself.

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3 years ago

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just olya [345]

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3 years ago

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uysha [10]

Answer:

The red shape

Step-by-step explanation:

This is because they are of the same shape and size.

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8 0

3 years ago

Read 2 more answers

1.John has a sink that is shaped like a half-sphere. The sink has a volume of 1072 in. One day, his sink

Vlad [161]

Answer:

$\large\boxed{\large\boxed{85cups}}$

Explanation:

1. Volume of a cup

The shape of the cup is a cylinder. The volume of a cylinder is:

$\text{Volume of a cylinder}=\pi \times (radius)^2\times height$

The diameter fo the cup is half the diameter: 2in/2 = 1in.

Substitute radius = 1 in, and height = 4 in in the formula for the volume of a cylinder:

$\text{Volume of the cup}=\pi \times (1in)^2\times 4in\approx 12.57in^3$

2. Volume of the sink:

The volume of the sink is 1072in³ (note the units is in³ and not in).

3. Divide the volume of the sink by the volume of the cup.

This gives the number of cups that contain a volume equal to the volume of the sink:

$\dfrac{1072in^3}{12.57in^3}=85.3cups\approx 85cups$

8 0

3 years ago