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nlexa [21]
3 years ago
10

Which represents the solution(s) of the equation x2 = 64?

Mathematics
2 answers:
Phantasy [73]3 years ago
6 0

Answer:

32

Step-by-step explanation:

2x = 64

/2     /2

x = 32

Ket [755]3 years ago
3 0

Answer:

Step-by-step explanation:

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#7) Solve 8c - 3c + 3 = 13.
nordsb [41]

Hello!

\large\boxed{c = 2}

8c - 3c + 3 = 13

Begin by combining like terms:

5c + 3 = 13

Subtract 3 from both sides:

5c + 3 - 3 = 13 - 3

5c = 10

Divide both sides by 5:

5c/5 = 10/5

c = 2.

6 0
3 years ago
An Uber fare in San Diego is $3.50 for the first ½ mile and additional mileage charged at a rate of $0.30 for each additional 0.
ANEK [815]

Answer:

3.6 miles

Step-by-step explanation:

For a trip of x miles, there are x-0.5 miles of it that are "additional", which makes (x-0.5)/0.1 additional tenths.

Then the charges (in dollars) are ...

... 3.50 + 0.30(x -0.5)/0.1

Adding a tip of $2 and requiring the total be less than $15 gives ...

... 3.50 + 0.30(x -0.5) + 2.00 ≤ 15.00

... 5.50 + 3(x - 0.5) ≤ 15.00 . . . . simplify a bit

... 4.00 +3x ≤ 15.00 . . . . . . . . . . simplify more

... 3x ≤ 11.00 . . . . . . subtract 4.00

... x ≤ 3.667 . . . . . . divide by 3

Miles are measured in tenths. We cannot go 3.7 miles on $15, but we can go 3.6 miles.

6 0
4 years ago
"Seven subtracted from the product of a number and 4 is -59."
xenn [34]

Answer:

the unknown number is -13

Step-by-step explanation:

4n -7 = -59

4n = -59 +7

n= -52 /4

n = -13

3 0
3 years ago
Help I'm taking a k12 quiz 2.04: composite figures but, I can't figure these out can anyone help me?
ICE Princess25 [194]
All of these can be solved by separating complex figur into simpler one.
Needed formulas are:
Area of rectangle A=a*b
Area of triangle A=a*h/2
Area of paralelogram A= a*h

QUESTION 1.
When we connect points F and S we get a rectangle and a triangle.
Dimensions of sides of a rectangle are a=9 and b=2. 
A=9*2=18 units^{2}
For a triangle we need to take one side and it's height. Let's take side FS because it's easiest to find the height.
a=9
h=6
A=9*6/2=27units^{2}

Tot+al area of a figure: 
A=18+27=45units^{2}

QUESTION 2.
We connect point (1,1) with (1,-2) and (-6,1). This way we get a rectangle and three triangles.
Rectangle:
a=3
b=4
A=3*4=12units^{2}

Top right triangle:
a=4
h=3
A=4*3/2=6units^{2}

Top left triangle:
a=7
h=2
A=7*2/2=7units^{2}

Bottom left triangle:
a=7
h=3
A=7*3/2=10.5units^{2}

Total area of a figure:
A=12+6+7+10.5=35.5units^{2}

QUESTION 3.
We connect points (-4,2) and (-1,3). This way we get a paralelogram and a rectangle.

Paralelogram:
a=6
h=1
A=6*1=6units^{2}

Rectangle:
a=distance between (-4,2) and (-1,3) = \sqrt{ (-1-(-4))^{2} + (3-2)^{2} } = \sqrt{10}
b = distance between (-4,2) and (-2,-4) = \sqrt{ (-2-(-4))^{2} + (-2-2)^{2} } = \sqrt{20}
A=a*b=\sqrt{10} * \sqrt{20} = \sqrt{200} =10 \sqrt{2}units^{2}

Paralelogram:
a=6
h=1
A=6*1=6units^{2}

Total area of a figure:
A=10 \sqrt{2} + 6 units^{2}

QUESTION 4.
We coonect missing side of a triangle. That side has a length of: 6in-3in=3in. Vertical side of triangle is: 13in-7in=6in
Area:
a=3
h=6
A=3*6/2=9in^{2}

Rectangle:
a=7in
b=6in
A=7*6=42in^{2}

Total area of a figure:
A=9+42=51in^{2}
7 0
3 years ago
Read 2 more answers
. The points given in the table lie on a line. Find the slope of the line.
larisa [96]

Answer:

-12 / 17

Step-by-step explanation:

x | -1 | 2 | 5 | 8 |

-----------------------

y | 3 | -1 | -5 | -9 |

Piking the poits at the extreme:

x1 = - 1 ; y1 = 3

x2 = 8 ; y2 = - 9

Slope = Rise / Run

Rise = y2 - y1 = - 9 - 3 = - 12

Run = x2 - x1 = 8 - (-9) = 8 + 9 = 17

Hence,

Slope = - 12 / 17

3 0
3 years ago
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