3 years ago

4. If the figures below are similar with a scale factor of 2:3, find the value of x.

Mathematics

1 answer:

Kobotan [32]3 years ago

4 0

Answer:

x = 63

Step-by-step explanation:

Using proportion to solve for x

$\frac{42}{x}$ = $\frac{2}{3}$ ( cross- multiply )

2x = 126 ( divide both sides by 2 )

x = 63

You might be interested in

Who gets this I am not sure what I have to do

natta225 [31]

Area of Parallelogram = base x height
height = 4.5 cm
base = 4.5 cm x 2

height = 4.5 cm
base = 9 cm

9 cm x 4.5 cm = 40.50 cm^2

8 0

3 years ago

Read 2 more answers

Plz help me will give brainlest I hate my <br>math teacher and the ones I need help with are 3-7

victus00 [196]

I can't do 3 and 4 for you but I can do 5 6 and 7.

5. Hotel B

6. Hotel B

7. Hotel A
-There are fewer values in the dataset
- In general, the values seem to increase in intervals of 20

3 0

4 years ago

Read 2 more answers

What is formed when two complementary angles share one ray?

aleksklad [387]

Answer:

the complementary angles form a right angle with the shared ray

5 0

3 years ago

Since Beth was born, the population of her town has increased at a rate of 850 people per year. On Beth's 9th birthday, the tota

scZoUnD [109]

Answer:

editor edit

37,650

Step-by-step explanation:

37650

3 0

3 years ago

A scientist is growing bacteria in a lab for study. One particular type of bacteria grows at a rate of y=2t^2+3t+500. A differen

Leya [2.2K]

ANSWER

Approximately after 15 minutes.

EXPLANATION

The growth rate of the first bacteria is

$y = 2 {t}^{2} + 3t + 500$

The growth rate of the first bacteria :

$y = 3 {t}^{2} + t + 300$

To find the time that, there will be an equal number of bacteria, we equate the two equation;

$3 {t}^{2} + t + 300 = 2 {t}^{2} + 3t + 500$

$3 {t}^{2} - 2 {t}^{2} + t - 3t + 300 - 500 =00$

${t}^{2} - 2t - 200= 0$

We solve for t to get,

$t = 15.177$

$t = - 13.177$

We discard the negative value.

This implies that,

$t \approx15$

8 0

4 years ago