3 years ago

What is the inverse of y = 1-7 ? 4

Mathematics

1 answer:

zaharov [31]3 years ago

7 0

Answer:

Step-by-step explanation:

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It is believed that 3/4 of our dreams involve people that we know. Write an expression to describe the number of dreams that fea

professor190 [17]

3/4 of dreams = 3/4 of 'd'

The expression is $\frac{3}{4}d$

When d = 28
Number of dreams = $\frac{3}{4}(28)= \frac{3*28}{4}=21$

Answer: 21 dreams

6 0

3 years ago

Insert grouping symbols so that the given expression has a value of 34. 14 + 10 – 6 • 8 – 3

Naily [24]

The correct answer is D. 14 + (10 – 6) • (8 – 3).

That's because in each of the other answers, we are subtracting a greater and greater number. But in this version, we are first completing the parenthesis, which gives us the following.

14 + (10 – 6) • (8 – 3)

14 + (4) • (5)

Now we complete the multiplication.

14 + 20

And we end with the addition.

3 0

3 years ago

Mai spent $64 on fruit at the grocery store. She spent a total of $80 at the store. What percentage of the goal did she spend on

n200080 [17]

Answer:

80%

Step-by-step explanation:

64/80 = .8/1

multiply by a hundred and you get 80%

3 0

2 years ago

Write the expression 2i^15-i^7 in the standard form a + bi

elixir [45]

$\bf 2i^{15}-i^7\qquad 
\begin{cases}
i^2=\sqrt{-1}\cdot \sqrt{-1}\implies \sqrt{(-1)^2}\implies -1\\\\
i^4=i^2\cdot i^2\implies -1\cdot -1\implies 1
\end{cases}\\\\
-----------------------------\\\\
2i^{4+4+4+2+1}-i^{4+2+1}\implies 2i^4i^4i^4i^2i^1-i^4i^2i^1
\\\\\\
(2\cdot 1\cdot 1\cdot 1\cdot -1\cdot i)-(1\cdot -1\cdot i)\implies -2i-(-i)
\\\\\\
-2i+i\implies -i\implies \boxed{0-i}$