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3 years ago

3-3[6-(3-7)]+3(7-4) evaluate the expression

Mathematics

1 answer:

enot [183]3 years ago

8 0

Answer:

-18

Step-by-step explanation:

$3-3(6-(3-7))+3(7-4)\\\\=3-3(6-(-4))+3(7-4)\\\\=3-3(6+4)+3(7-4)\\\\=3-3(10)+3(7-4)\\\\=3-3(10)+3(3)\\\\=3-30+3(3)\\\\=3-30+9\\\\=-27+9\\\\=-18$

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At your birthday party you had 78 slice pizzas . 41 slices were eaten . What fraction of pizza is left

natka813 [3]

Answer:

78-41=37

Step-by-step explanation:

8 0

3 years ago

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0.4x - 1.2 = 0.15x + 0.8 ?????????

valentina_108 [34]

Answer:

x = 8

Step-by-step explanation:

0.4x - 1.2 = 0.15x + 0.8

0.4x - 1.2 + 1.2 = 0.4x

0.15x + 0.8 + 1.2 = 0.15x + 2

0.4x = 0.15x + 2

0.4x - 0.15x = 0.25x

0.15x + 2 - 0.15x = 2

0.25x = 2

0.25x / 0.25 = x

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3 years ago

Which is 5logx - 6log(x-8) written as a single logarithm?

ira [324]

Answer:

option a

$log\frac{x^{5} }{(x-8)^{6} }$

Step-by-step explanation:

Given in the question an expression

5logx - 6log(x-6)

To solve this question we will apply two of the logarithm property

1) power rule

alogx = log $x^{n}$

log $x^{5}$ - log $(x-8)^{6}$

2) substraction rule

The log of a quotient is the difference of the logs

loga (x/y) = loga x - loga y

$logx^{5}- log(x-8)^{6}$

log $\frac{x^{5} }{(x-8)^{6} }$

6 0

3 years ago

Read 2 more answers

Ostrovityanka [42]

Answer:

110÷360×π×4.6^(2)= 20.312

Step-by-step explanation:

Area of sector = angle / 360 x π x r^(2)

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3 years ago

Sean paints 8/15 of a fence in 1 hour. He paints 3/10 of the fence less in the second hour. What fraction of the fence did he pa

a_sh-v [17]

Answer: $\frac{3}{10}$

Step-by-step explanation:

Given

Sean paints $\frac{8}{15}$ of a fence in 1 hour

Sean paints $\frac{3}{10}$ part less in the second hour

So, fraction he paints in the second hour = $\frac{8}{15}-\frac{3}{10}=\frac{16-9}{30}=\frac{7}{30}$

Paint in 2 hours = $\frac{8}{15}+\frac{7}{30}=\frac{16-7}{30}=\frac{9}{30}$

= $\frac{3}{10}$

No, he did not finish his job

7 0

3 years ago