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3 years ago

Simplify -7y - 3(-3z + 5y) - z

Mathematics

1 answer:

NikAS [45]3 years ago

4 0

Answer:

-8+8

Step-by-step explanation:

7y−3(−3+5)−

7y-3({\color{#c92786}{-3z+5y}})-z

7−3(5−3)−

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What is the value of y=2(1.5)^x +3 when x=2

Inessa05 [86]

Answer:

y=7.5

Step-by-step explanation:

2*1.5ˣ+3=

substitute 2 for x

2*1.5²+3=

2*2.25+3=

4.5+3

y=7.5

5 0

3 years ago

Help me please thank you

TEA [102]

Answer:

about 41.14 pages per day

Step-by-step explanation:

She wants to read 576 pages in 14 days

Take the number of pages and divide by the number of days

576/14=41.14285714 pages per day

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4 years ago

Read 2 more answers

Certain items are purchased jointly. If each person pays 8coins, the surplus is 3coins, and if each person gives 7coins, the def

kicyunya [14]

Answer:

7 people
53 coins

Step-by-step explanation:

The problem statement tells us ...

8x = y +3

7x = y -4

Subtracting the second equation from the first gives ...

x = 7

Then ...

y = 7x +4 = 7·7 +4 = 53

There are 7 people, and 53 coins are required for purchase.

4 0

4 years ago

Read 2 more answers

Square root of 8 times square root of 32

fredd [130]

in decimal form it is 45.2

in exact form it is 32 squareroot 2

5 0

3 years ago

The total surface area of a cone whose radius is 2 r and slant height 2l is

vampirchik [111]

Answer:

$A=4\pi r(l+r)$

Step-by-step explanation:

The total surface area of a cone is given by :

$A=\pi rl+\pi r^2\\\\=\pi r(l+r)$

Put r = 2r and l = 2l in the above formula

$A=\pi \times 2r(2l+2r)\\\\A=2\pi r(2l+2r)\\\\=2\pi r \times 2(l+r)\\\\=4\pi r(l+r)$

Hence, the total surface area of the cone is $4\pi r(l+r)$ .

7 0

3 years ago