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Phoenix [80]
2 years ago
13

2⋅−21 PLZ I NEED HELP

Mathematics
1 answer:
cricket20 [7]2 years ago
3 0

Answer:

\sf 2\times\left(-21\right)

Multiply numbers:

\sf =-42

____________________

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The sum of two numbers is 95. If the larger is increased by twice the smaller, the result is 120. Find the numbers.
adelina 88 [10]
Hello!

You can make two expressions based on what you know

let x equal the larger number
let y equal the smaller number

x + y = 95
x + 2y = 120

We can use elimination to get rid of x

You can subtract the two equation to get rid of x

-y = -25

Since y is negative we can multiply both sides by -1 to make y positive

y = 25

Now we can put this into one of the other equations to find x

x + 25 = 95

subtract 95 from both sides

x = 70

The answers are 70 and 25

Hope this helps!
3 0
2 years ago
An 11-inch string is cut into 3 equal pieces. Which expression shows the length of each piece?
slega [8]
Sense this string would only be 11 (in), and we are cutting it into 3 pieces, this would show us that we would then be dividing the 11 (in) string into 3 pieces. The expression would be below.

\boxed{11\div3}
5 0
2 years ago
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Which is bigger 0.17 or 0.165
Bogdan [553]
0.17 is bigger because you compare the values of the number in each place. There is no whole number, the tenths place is equal. Then in the hundredths place you have a 6 and a 7. 6<7 so therefore 0.17> 0.165. To help yourself out u can add a 0 at the end to then more easily compare .170 to .165
5 0
3 years ago
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Romashka-Z-Leto [24]

Answer:

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Step-by-step explanation:

Take the amount earned weekly and multiply by 4 weeks

562*4

2248

3 0
3 years ago
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If a rectangle has an area of 36 square units, what could the dimensions be?
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The area of a rectangle is length times width. Since a square's length is equal to its width, a square's area is equal to the length of one side times itself. So, reversed, the square root of the square's area gives the length of one side. In this case, the square root of 36 square centimeters is 6 centimeters. Again, since all four sides of a square are the same, its perimeter is equal to the length of one side times four. For a square with one side equal to 6 centimeters, the perimeter equals 24 centimeters.

6 0
3 years ago
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