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3 years ago

7^8 x 7^-4 what’s the answer

Mathematics

2 answers:

lozanna [386]3 years ago

5 0

Answer:

2401

Step-by-step explanation:

plz give brainlyist

ElenaW [278]3 years ago

5 0

Answer:

*Desmos Calculator will be your bestfriend*

Step-by-step explanation:

7^8= 5,764,801

7^-4= 37.6493128

So, 5,764801×37.6493128

Calculator! :D

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given the rectangular coordinates (0,-8), find the two polar coordinate pairs in radians represents the same point?

klemol [59]

Answer:

the rectangular coordinates are , so the answer is A.

Step-by-step explanation:

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8 0

3 years ago

Solve for the given variable 3(2x+5)=4x+21

Nookie1986 [14]

Answer:

x=3

Step-by-step explanation:

3(2x+5)=4x+21

6x+15=4x+21

-4x -4x

2x+15= 21

-15 -15

2x=6

2 2

<h2>x=3 Hope that helped!!!!</h2>

6 0

3 years ago

What gives a whole number multiplying, 0.65 and 58 by 10 or 100

HACTEHA [7]

The correct answer is 10! Just asked Siri!

4 0

3 years ago

Read 2 more answers

If RX=4 and XS=9, then XT=<br> And how do you get it?

konstantin123 [22]

Answer:

XT=6 units

Step-by-step explanation:

The picture of the question is the attached figure

step 1

In the right triangle RST

Applying the Pythagorean theorem

$RS^2=RT^2+TS^2$

we have

$RS=RX+XS=4+9=13\ units$ ---> by segment addition postulate

substitute

$RT^2+TS^2=169$ ----> equation A

step 2

In the right triangle RTX

Applying the Pythagorean theorem

$RT^2=RX^2+XT^2$

we have

$RX=4\ units$

substitute

$RT^2=4^2+XT^2$

$RT^2=16+XT^2$

$XT^2=RT^2-16$ ----> equation B

step 3

In the right triangle XTS

Applying the Pythagorean theorem

$TS^2=XS^2+XT^2$

we have

$XS=9\ units$

substitute

$TS^2=9^2+XT^2$

$TS^2=81+XT^2$

$XT^2=TS^2-81$ ----> equation C

step 4

equate equation B and equation C

$TS^2-81=RT^2-16$

$TS^2-RT^2=81-16$

$TS^2-RT^2=65$ ----> equation D

step 5

Solve the system

$RT^2+TS^2=169$ ----> equation A

$TS^2-RT^2=65$ ----> equation D

Solve by elimination

Adds equation A and equation D

$RT^2+TS^2=169\\TS^2-RT^2=65\\---------\\TS^2+TS^2=169+65\\2TS^2=234\\TS^2=117$

Find the value of RT^2

$RT^2+117=169\\RT^2=52$

step 6

Find the value of XT

equation C

$XT^2=117-81\\XT^2=36\\XT=6\ units$

7 0

3 years ago

The population of the town is 2500 and is decreasing at a rate of 3% per year. determine the population after 11 years

Debora [2.8K]

Answer:

$\huge \boxed{ \boxed{1675}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

percent
percentage words problem
PEMDAS

<h3>given:</h3>

population:2500
decreasing rate:3%

the population after 11 years

<h3>let's solve:</h3>

according to the question

population decreases in 1 year

$2500 \times 3\% \\ 2500 \times \frac{3}{100} \\ 25 \times 3 \\ 75$

population will decrease in 11 years

75×11
825

so the population of the town after 11 years will be

2500-825

4 0

3 years ago