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3 years ago

A car is going at 80 mph. how long will it take to cover 20 miles

Mathematics

1 answer:

Lilit [14]3 years ago

6 0

30 = 80*t
t = 30/80 = 3/8 hr
3/8 hr * 60 min/hr = 180/8 = 22.5 min

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The sum of two numbers is 90. Their difference is 18. Find the numbers.

Naddik [55]

Answer:

36 & 54

Step-by-step explanation:

By Question :-

Sum of numbers = 90 .
Difference of numbers = 18 .

Let :-

First Number be x .
Second number be y .

According to 1st condition :-

$: \implies$ x + y = 90

According to 2nd condition :-

$: \implies$ x - y = 18

Adding the equations :-

$: \implies$ 2x = 18 + 90

$: \implies$ 2x = 108

$: \implies$ x = 54

Therefore :-

$: \implies$ First number = 54

$: \implies$ Second number = 36

5 0

2 years ago

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Can anyone guess what the answer of the algebraic expression is? Will mark brainliest only if you get this algebraic expression

sladkih [1.3K]

uhhhhhhhh it's 2.......

4 0

2 years ago

Identify the slope and Y intercept of the following graph

azamat

The slope is 3x and the y intercept is 2 so it should be written like y=3x+2

8 0

2 years ago

What is the slope of a line that is perpendicular to the line v=-1/3x-6

bija089 [108]

If you are trying to find the slope of a line that is perpendicular to another line, you would need to change the sign and change it to the fraction's reciprocal.

m = $-\frac{1}{3}$

Change the sign of the slope:

$\frac{1}{3}$

Finally, make the reciprocal of the original slope (switching the numerator and denominator):

$\frac{3}{1}$

Simplify:

Final answer:

$m=3$

7 0

2 years ago

Find value of trigonometric ratio round your answer to four decimal places tan a

nirvana33 [79]

Answer:

tan A = .3429

Step-by-step explanation:

Tangent = Opposite over Adjacent

The opposite of ∠A = 12 and the adjacent = 35

so tan A = 12/35 which equals .3428571492

The question asks us to round to four decimal places

Hence, the answer is .3429

5 0

2 years ago