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lys-0071 [83]
2 years ago
8

Estimate the surface area of a cube with side length 9.9 in. A) 100 in2 Eliminate B) 400 in2 C) 600 in2 D) 1000 in2

Mathematics
1 answer:
Ray Of Light [21]2 years ago
6 0

Check the picture below.

\stackrel{\textit{area of all 6 faces}}{6(9.9\cdot 9.9)\implies 6(98.01)}\implies 588.06~~ \approx ~~600~in^2

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I need the base and hight
iris [78.8K]

Answer:

Height = 5 and Base = 10

Step-by-step explanation:

The base of the parallelogram is twice the perpendicular height of the parallelogram. The area of the parallelogram is 50 cm².

Formula for area of parallelogram = base × height

Base = 2h

Height = h

∴ Area = 2h × h = 50

Solution:

2h × h = 50

2h² = 50

\frac{2h^{2} }{2} = \frac{50}{2}

h² = 25

\sqrt{h^{2} } = \sqrt{25}

h = 5

∴ height = 5 and base = 2(5) = 10

4 0
2 years ago
11. Write an equation for a line that is parallel to the line 6x - 3y = 15 and goes through the point
user100 [1]

Answer:

y = 2x + 8

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

6x - 3y = 15 ( subtract 6x from both sides )

- 3y = - 6x + 15 ( divide all terms by - 3 )

y = 2x - 5 ← in slope- intercept form

with slope m = 2

Parallel lines have equal slopes, thus

y = 2x + c ← is the partial equation

To find c substitute (- 2, 4) into the partial equation

4 = - 4 + c ⇒ c = 4 + 4 = 8

y = 2x + 8 ← equation of parallel line

3 0
3 years ago
Ms. Vasquez's daughter lives 1,650 miles away. Ms. Vasquez won a gift card for 100 gallons of gas. If her car can travel 35 mile
ivanzaharov [21]

Answer:

yes, since it takes 48 gallons of gas to go one direction to go back it is 96

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
cupoosta [38]

x =  \frac{ - b \pm \sqrt{ {b}^{2}  - 4ac} }{2a}  \\  \\ x =  \frac{8 \pm \sqrt{ {8}^{2} - 4 \times 2 \times 5 } }{2 \times 2}

x =  \frac{8 \pm \sqrt{24} }{4}  \\  \\ x =  \frac{8 \pm2 \sqrt{6} }{4}

x = 2 \pm  \frac{ \sqrt{6} }{2}  \\  \\ x = 2  \pm  \sqrt{1.5}  \\  \\ x = 2 +  \sqrt{1.5}  \:  \: and \:  \:  \: 2 -  \sqrt{1.5}

\textbf{\red{Your answers are correct.}}
8 0
3 years ago
Use the stem and leaf plot shown. What is the mean time (to the nearest min) that is spent waiting at the doctors office
harina [27]

Answer:

34 minutes.

Step-by-step explanation:

I wrote all the numbers given so, 7, 15, 18, 24, 29, 29, 30, 31, 36, 45, 48, 61, 73. Then, you add them up which gives you 446, then you divide 446 by the number of digits given so it is 446/13=34.31.

3 0
3 years ago
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