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3 years ago

PLS HELP WITH THIS (this is algebra 1 btw I don't know why it says college) Question in picture

Mathematics

1 answer:

postnew [5]3 years ago

7 0

Answer:

Step-by-step explanation:

You might be interested in

Eight more than twice a number is ten less than three times that number please help

xenn [34]

Here’s the answer:
2X+8=3X-10

6 0

3 years ago

A tub contains red, yellow and blue counters. There is ten more yellow than red counters, and the ratio of red to blue counters

True [87]

Answer:

5/12

Step-by-step explanation:

A ratio of 3:4 means that red counters make up 3/7 of the sum of red and blue counters and blue counters make up 4/7 of the total sum of red and blue counters.

If there is 20 blue counters, then 20 is 4/7 of the sum of the total red and blue counters.

So we need to solve for the total sum.

$\frac{4}{7} x = 20$

$4x = 140$

$x = 35$

So the total amount of red and blue counters are 35,

So this means the amount of red counters is 15.

The amount of yellow counters is 25.

So the total number of counters are 60.

So P(Yellow counters)= 25/60= 5/12

3 0

2 years ago

Solve. 90x = 27. Explain every step. Full credit will not be earned unless each step is explained.

alexira [117]

Answer: x= 0.3 or x=3/10

Step-by-step explanation:

90x=27

divide both sides by 90

x=27/90 which simplfiyes to 3/10

x=0.3

5 0

3 years ago

Read 2 more answers

A Cepheid variable star is a star whose brightness alternately increases and decreases. For a certain star, the interval between

fomenos

Answer:

0.41 (correct to 2 decimal place)

Step-by-step explanation:

If $B(t)=4.0+0.35sin\frac{2\pi t }{5.4}$

Let $u=\frac{2\pi t }{5.4}$ , then $B(u)=4.0+0.35sin u$

We want to determine the rate of increase $\frac{dB}{dt}$ after one day

$du=\frac{2\pi dt }{5.4}$ and $\frac{dB}{du} =0.35cos u$

$\frac{dB}{dt}=\frac{2\pi }{5.4}0.35cos (\frac{2\pi t }{5.4})=0.407cos (\frac{2\pi t }{5.4})$

$B^{'} (t)=0.407cos (\frac{2\pi t }{5.4})$

Rate of increase after one day, i.e. t=1

$B^{'} (1)=0.407cos (\frac{2\pi X 1 }{5.4})$ = 0.407 =0.41 (correct to 2 decimal place)

5 0

3 years ago

Three boxes are stacked one on top of the other. One box is 5 feet 10 inches tall , one is 4 feet 2 inches tall and one is 2 fee

g100num [7]

Answer:

136 inches

Step-by-step explanation:

7 0

3 years ago