All categories

3 years ago

Will give brainliest please help ASAP

Mathematics

1 answer:

DIA [1.3K]3 years ago

5 0

Answer:

(-1,3)

Step-by-step explanation:

2x-3y=9 multiply by 3 to get 6x-9y = 27

3x+5y=4 multiply by -2 to get -6x-10y= -8

Add together -19y=19, y= -1

Put y into either equation => 2x-3(-1)=9, 2x+3=9, 2x=6, x=3

You might be interested in

If triangle BNV ~ triangle BRG, BR=4x+7 and BG= 18 find the value of x

Bingel [31]

Answer:

x=5

Step-by-step explanation:

5 0

2 years ago

(Q1) Which of the following is true about the function y = 3 • 2x?

Virty [35]

Answer: Third option

Step-by-step explanation:

You have the function:

$y=3*2^x$

Then, if the value of x increases by 1, you obtain:

-Rewrite the function:

$y=3*2^{(x+1)}$

-Substitute values for x into the function and observe what happen to y. Then:

x=1

$y=3*2^{(1+1)}=12$

x=2

$y=3*2^{(2+1)}=24$

x=3

$y=3*2^{(3+1)}=48$

The value of y is doubled.

6 0

2 years ago

Read 2 more answers

My friend recently proved 0=1 and i know something is wrong but i dont know what

konstantin123 [22]

Step-by-step explanation:

Remember when expanding radicals,

$\sqrt{ab} = \sqrt{a} \times \sqrt{b}$

When expanding radicals into two radicals, we don't let our radicand have two negative answers.

$i = \sqrt{ - 1}$

${i}^{2} = - 1$

We don't do this

$(\sqrt{ - 1} ) {}^{2} = \sqrt{ - 1 \times - 1}$

$- 1 = \sqrt{1}$

$- 1 = 1$

5 0

2 years ago

Read 2 more answers

Please ASAP please

Mars2501 [29]

Answer:

A)3.125hr

B)53.325mi

Step-by-step explanation:

speed=distance/time

an hour and 15min=1.25hr

32/1.25=25.6mi/hr

80/25.6=3.125hr

2hr and 5min=2+5/60=2.083hr

2.083x25.6=53.325mile

7 0

2 years ago

Identify the percent of change as an increase or decrease. Then find the percent of change, rounding to the nearest tenth of a p

kap26 [50]

Answer:

-60% decrease

Step-by-step explanation:

60 is the old value and 24 is the new value.

percent change = $\frac{new - old}{|old|}$ x 100%

so for this problem, you can substitute the values given in the formula:

percent change = $\frac{60-24}{|60|}$ x 100% = $\frac{-36}{60}$ x 100% =

-60% (decrease)

3 0

3 years ago