All categories

3 years ago

What is the value of x when y is 21

Mathematics

1 answer:

Marrrta [24]3 years ago

6 0

Answer:

Step-by-step explanation:

7 x 3 = 21

You might be interested in

Which statement BEST describes this quadratic function? A) decreasing when x < 0 B) decreasing when x < –1 C) decreasing w

kirza4 [7]

Answer:

the answer is c

Step-by-step explanation:

6 0

4 years ago

A car travels 30 1/5 miles in 2/3 of an hour.What is the average speed in miles per hour of the car

slega [8]

The speed of car is 45.3 miles per hour.

Further explanation:

Speed is the rate at which an object changes position with respect to time.

Given

$Distance = 30\frac{1}{5}\ miles\\Time=\frac{2}{3}$

The formula for calculating speed is:

$Speed = \frac{distance}{time}\\= \frac{30\frac{1}{5}}{\frac{2}{3}} \\=\frac{\frac{151}{5}}{\frac{2}{3}} \\=\frac{151}{5}*\frac{3}{2}\\=\frac{453}{10}\\=45.3\ miles\ per\ hour$

The speed of car is 45.3 miles per hour.

Keywords: Speed, distance

Learn more about speed at:

#LearnwithBrainly

8 0

3 years ago

Temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius . One day the high tempe

bazaltina [42]

The high temperature is 35 degree celsius

Solution:

Given that, Temperature in degrees Fahrenheit is equal to 32 more than 9/5 times the temperature in degrees Celsius

Let "f" be the temperature in degree Fahrenheit

Let "c" be the temperature in degree celsius

Therefore,

Temperature in degrees Fahrenheit = 32 + $\frac{9}{5}$ times the temperature in degrees Celsius

$f = 32 + \frac{9}{5} \times c$

One day the high temperature in Edison. Nj was 95 degrees Fahrenheit

f = 95 ; c = ?

Substitute f = 95 in above equation

$95 = 32 + \frac{9c}{5}\\\\95=\frac{32 \times 5 +9c}{5}\\\\95 \times 5 = 160+9c\\\\475 = 160 + 9c\\\\9c = 475 - 160\\\\9c = 315\\\\c = 35$

Thus high temperature in degrees Celsius is 35 degree celsius

5 0

3 years ago

There is a 15% discount on all items in a store. You buy a $12 shirt and $45 jeans. What will be your total cost?

Nina [5.8K]

Answer:

The total cost of the shirt and Jean's together with a 15% discount would be $48.45.

Step-by-step explanation:

if you at 12 and 45 you get 57 now if you multiply that by .15 which would be 15% you would get $48.45.

6 0

3 years ago

Read 2 more answers

1) (3+2i)-(1-6i) 2) 4i+3-6+i-1 3) 5i(3-2i) 4) (5+3i)(2-3i) 5) (2+i)(2-i)

lutik1710 [3]

Answer:

Step-by-step explanation:

1) (3 + 2i) - (1 - 6i)

3 + 2i - 1 + 6i

2 + 8i

2) 4i + 3 - 6 + i - 1

5i - 3 - 1

5i - 4

3) 5i ( 3 - 2i )

15i - 10i^2

15i - 10 ( -1 )

15i + 10

4) ( 5 + 3i ) ( 2 - 3i )

10 - 15i + 6i - 9i^2

10 - 9i - 9i^2

10 - 9i - 9 ( -1 )

10 - 9i + 9

- 9i + 19

5) ( 2 + i ) ( 2 - i )

4 - 2i + 2i - i^2

4 - i^2

4 - (-1)

I hope this helps!

8 0

4 years ago

Read 2 more answers