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3 years ago

Please helppppppppppppppppppppppppppppppppppppppppppp

Mathematics

2 answers:

9966 [12]3 years ago

8 0

Answer:

x = -5

Step-by-step explanation:

This is correct because I did the math

Sati [7]3 years ago

3 0

Answer:

x=3.5

Step-by-step explanation:

multiply each side by 4 so you get 3(x+1)=x+8. distribute to get 3x+1=x+8. subtract numbers from each side to get 2x=7. divide by 2, x=3.5

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Answer the 3 screenshotted questions below. 30 points!

Triss [41]

Answer:

13. $36a^2b^4$ π

14. $16x^3y^4$ π

15. $-\frac{c^3}{4a^7b^3}$

Step-by-step explanation:

13.

A = π * $r^2$

r = $6ab^2$

A = π* $(6ab^2)^2$

A = π * $(6ab^2)(6ab^2)$

A = π * $36a^2b^4$

A = $36a^2b^4$ π

14.

V = π * $r^2$ * h

r = $2x$

h = $4xy^4$

V = π * $(2x)^2$ * $4xy^4$

V = π * $4x^2$ * $4xy^4$

V = π * $16x^3y^4$

V = $16x^3y^4$ π

15. $\frac{3a^{-4}b^2}{-12a^3b^5c^{-3}}$ = $-\frac{c^3}{4a^7b^3}$

$\frac{3a^{-4}b^2}{-12a^3b^5c^{-3}}$

$\frac{a^{-4}}{-4a^3b^5c^{-3}}$

$\frac{b^2}{-4^{3+4}b^5c^{-3}}$

$\frac{b^2}{-4^7b^5c^{-3}}$

$\frac{1}{-4a^7b^{5-2}c^{-3}}$

$\frac{1}{-4a^7b^3c^{-3}}$

$\frac{c^3}{-4a^7b^3}$

$-\frac{c^3}{4a^7b^3}$

Hope this helps!

3 0

3 years ago

Jackie can clean a house in 6 hours. When Jackie and Veronica work together, they can clean a house in about

Digiron [165]

Answer:

5.4 hr i think

Step-by-step explanation:

3 0

3 years ago

Marcus is doing a science experiment in which he measures the rate at which bacteria multiply. Every 15 seconds, the bacteria do

Setler [38]

THE ANSWER IS D
YOU HAVE AT TIME ZERO 10 BACTERIA,
AFTER 15 SEC YOU HAVE 20 BACT
AFTER 30 SEC THE NUMBER DOUBLES SO YOU HAVE 40 BACT
AFTER 45 SEC YOU YOU HAVE 80
AND SO ON, AFTER 120 SEC YOU HAVE 2560 BACT

3 0

3 years ago

Read 2 more answers

three times a number is three more than twice the number which equation can be used to find the value of X the unknown number

Lyrx [107]

Let the value of the number be represented as x.

Then, write out an equation;

3x=2x+3 <--- Solve for x now
3x-2x=3
x=3

Therefore the number is 3.

Hope I helped :)

7 0

3 years ago

Read 2 more answers

What is the Order of Magnitude of the number of pennies equivalent to a quarter?

Talja [164]

Answer:

It is mainly used while doing scientific notation. If two numbers differ by one order of magnitude, one is about ten times larger than the other. If they differ by two orders of magnitude, they differ by a factor of about 100.A quarter is 0.25 dollars so the ratio between 1 dollar and a quarter is 1/0.25(it means the dollar and the quarter which is 0.25 dollars) and that equals =4

3 0

3 years ago