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2 years ago

Please i need help with this question asap

Mathematics

2 answers:

Nataliya [291]2 years ago

5 0

Answer:

I'm pretty sure it's C

Step-by-step explanation:

Aleks04 [339]2 years ago

3 0

Answer:

Step-by-step explanati

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Not hard math, 25 points.

bixtya [17]

Answer:

3x=15

x=15/3

x=5

56=-8x

56/-8=x

-7=x

x/4=20

x=20×4

x=80

10=x/-2

10×-2=x

-20=x

-6y=-48

y= -48/-6

y=8

4 0

3 years ago

Choose the answer to complete each statement

Stolb23 [73]

Answer:

Slope: -7/-3=7/3x

Y-int: -3

Function: y=7/3x-3

4 0

3 years ago

Angelina factored (x - 4)8 and wrote that it was equal to (x2 - 42)2(x2 + 42). Use complete sentences to explain how you could c

lapo4ka [179]

There are several ways to confirm that the two expressions are equal. One method is to simply factor the first expression and see it you get a result equal to the second expression. An easier method is to set a value for x and substitute it to the two expressions. If the resulting value is that same, this means that the two expressions are equal.

3 0

3 years ago

Solve for x: 1 < x + 3 < 4

Otrada [13]

Answer:

The answer is D

Step-by-step explanation:

$1 - 3 < x < 4 - 3 \\ - 2 < x < 1$

8 0

3 years ago

A rectangle has a perimeter of 30 feet and an area of 50 square feet. What are the dimensions of the rectangle?

REY [17]

Perimeter (p) = 2×length (l) + 2×width (w)
p = 2l+2w
area (a) = l×w, so solve for one (I'll use l):
$a = l \times w \\ l = a \div w \\ p = 2l + 2w = 2(l + w)$
since p = 30, and a = 50, substitute the "a÷w" in for l in the perimeter equation:
$p = 2(l + w) = 2((a \div w) + w) \\ = 2((a \div w) + ( {w}^{2} \div w)) \\ p= 2((a + {w}^{2}) \div w$
Now plug in p and a values:
$p= 2((a + {w}^{2}) \div w) \\ 30 = 2((50 + {w}^{2}) \div w) \\ 30 \div 2 = (50 + {w}^{2}) \div w \\ 15w = 50 + {w}^{2}$
$15w = 50 + {w}^{2} \\ {w}^{2} - 15w + 50 = 0 \\ (w - 5)(w - 10) = 0$
therefore width can be either 5 or 10 (but not both), so let's plug in:
l = a÷w = 50÷5 = 10
So if w = 5, then l = 10

D) 5 feet, and 10 feet

3 0

3 years ago