3 years ago

Split the number 76 into the ratio 6:3:7:3 .

Mathematics

1 answer:

kompoz [17]3 years ago

3 0

Answer:

24:12:28:12

Step-by-step explanation:

76÷19=4

6×4:3×4:7×4:3×4

=24:12:28:12

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The cost of milk is expected to raise 106% over the next year

gulaghasi [49]

Answer: about $6.90

Step-by-step explanation: 106% of 3.35

100% of 3.35 is 3.35

6% of 3.35 is 0.201

Add them together and you get 3.551

When you round to the nearest cent, you get $3.55

After add 3.55 to 3.35 and you get $6.90

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3 years ago

The quartiles of any distribution are the values with cumulative proportions 0.25 and 0.75. What are the quartiles of the standa

choli [55]

$\mathbb P(X\le Q_1)=F_X(Q_1)=0.25\implies Q_1={F_X}^{-1}(0.25)\approx-0.6745$

where $F_X(x)$ is the CDF for $X\sim\mathcal N(0,1)$ .

By symmetry of the distribution, you then have

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3 years ago

Simplify the expression by using a double-angle formula. 2 sin 31°cos 31°

qwelly [4]

The double angle formula for the sine is

$\sin(2x) = 2\sin(x)\cos(x)$

The right hand side is exactly your expression, where $x = 31^\circ$

So, rewriting the expression from right to left, we have

$2\sin(31^\circ)\cos(31^\circ) = \sin(2\cdot 31^\circ) = \sin(61^\circ)$

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3 years ago

PLEASE HELPPPPPPPPPPPPPP

gregori [183]

Answer:

False

Step-by-step explanation:

To find the inverse of a function, switch the variables and solve for y.

The inverse of f(n)=-(n+1)^3:

$y=-(n+1)^3$

$n=-(y+1)^3$

$\sqrt[3]{n} =-(y+1)$

$\sqrt[3]{n} =-y-1$

$\sqrt[3]{n} +1=-y$ $-(\sqrt[3]{n} +1)=y$

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3 years ago

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1/4 (4x + 8)mi need help with this question

zepelin [54]

(4x+8)/4
(4x/4)+(8/4)
x+2

7 0

3 years ago