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sineoko [7]
3 years ago
11

Anyone knows how to do this?

Mathematics
2 answers:
masha68 [24]3 years ago
8 0
I took a test over it on edulastic.
amid [387]3 years ago
4 0

Answer:

i do not know how to do this yet but it looks like a high school thing

Step-by-step explanation:

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2 (5x + 3) = 15
lawyer [7]

Answer:

<u>D.10x+6=15</u>

Step-by-step explanation:

2(5x + 3) = 15 \\ { \boxed{ \boxed{10x + 6 = 15}}}

3 0
3 years ago
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Help me ASAP please
Harrizon [31]

Answer:

\large\boxed{7^{-8}}

Step-by-step explanation:

7^{-1}\cdot7^{-7}\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=7^{-1+(-7)}=7^{-8}

6 0
3 years ago
Identify the lateral area and surface area of a regular triangular pyramid with base edge length 14 cm and slant height 15 cm
posledela

Answer:

D) L = 315 cm2 ; S = 399.9 cm2

Step-by-step explanation:

Lateral area;

3 × (½)(14)(15)

315 cm²

Surface area:

315 + (½)(14)(14)sin(60)

399.8704896 cm²

6 0
3 years ago
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Last year a ticket to a movie cost $10 this year the price increased by $12 what percent did the price increase?
Phoenix [80]

Answer:

1.2%

Step-by-step explanation:

All you have to do is divide 12 by 10 and you get the answer 1.2.

6 0
4 years ago
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An urn contains 5 white ball and 8 black balls. 4 balls are randomly selected.
larisa86 [58]

|\Omega|=13^4=28561\\ |A|=8^3\cdot5=2560\\\\ P(A)=\dfrac{2560}{28561}\approx9\%

5 0
4 years ago
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