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SVETLANKA909090 [29]
2 years ago
9

Which of the following expressions is written in scientific notation?

Mathematics
2 answers:
balu736 [363]2 years ago
6 0

Lesson 2: Scientific Notation quick check

1. D) 4.22x10^-3

2. A) 7.08x10^-8

3. A) 6.1x10^-7

4. D) 1.25x10^-4

5.C) Doubling n results in doubling the value of the expression.

6. B) 2.45x10^5

7.A) 3x10^3

Please use this for double checking your answers!

Afina-wow [57]2 years ago
5 0
a\cdot10^n\ is\ scientific\ notation\ if\ a\in\left 10)\\\\b)\ 0.09\cdot10^7-NO-(0.0910)\\\\d)\ 4.22\cdot10^{-3}-YES
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Find area of parallelogram multiple choice
alina1380 [7]

In ∆ABD

\\ \sf\longmapsto Area=\dfrac{1}{2}bh=\dfrac{1}{2}(7\times 4)

In ∆BCD

\\ \sf\longmapsto Area=\dfrac{1}{2}(7\times 4)

Now

IN PARALLELOGRAM ABCD

\\ \sf\longmapsto Area=\dfrac{1}{2}(7\times 4)+\dfrac{1}{2}(7\times 4)

Option A

4 0
2 years ago
1. A trapezoid has an area of 91 m2. The height of the trapezoid is 7 m and the measure of one base is twice the height. What is
Lynna [10]
The area of the trapezoid is given by:
 A = (1/2) * (b1 + b2) * (h)
 Where,
 b1, b2: bases of the trapezoid
 h: height
 Substituting values we have:
 91 = (1/2) * ((2 * 7) + b2) * (7)
 Rewriting we have:
 91 = (1/2) * (14 + b2) * (7)
 (2/7) * 91 = 14 + b2
 b2 = (2/7) * 91 - 14
 b2 = 12 m
 Answer:
 
The measure of the other base of the trapezoid is:
 
b2 = 12 m
6 0
2 years ago
Read 2 more answers
Find the average value of the function on the given interval.<br> f(x)=ex/7; [0,7]
Anastaziya [24]

Answer:

f_{avg}=e-1

Step-by-step explanation:

We are given that a function

f(x)=e^{\frac{x}{7}}

We have to find the average value of function on the given interval [0,7]

Average value of function on interval [a,b] is given by

\frac{1}{b-a}\int_{a}^{b}f(x)dx

Using the formula

f_{avg}=\frac{1}{7-0}\int_{0}^{7}e^{\frac{x}{7}} dx

f_{avg}=\frac{1}{7}[e^{\frac{x}{7}}\times 7)]^{7}_{0}

By using the formula

\int e^{ax}=\frac{e^{ax}}{a}

f_{avg}=(e-e^0)=e-1

Because e^0=1

f_{avg}=e-1

Hence, the average value of function on interval [0,7]

f_{avg}=e-1

8 0
3 years ago
Kaiya says the complex fraction /= is equivalent to the complex fraction =/. Is she correct? Explain your answer.
Arturiano [62]

Answer:

Well i think so

Step-by-step explanation:

its just an equal sign on different sides

6 0
2 years ago
2. If x is directly proportional to y^3 and x=32 when y=2, i) Find an equation
svp [43]

Answer:

(i)

x \alpha y {3} \\ \frac{x}{y {3} }  = k

(ii)

\frac{x}{y {3}^{} }  =  \frac{x}{y {3}^{} }  \\  \frac{32}{ {2}^{3} }  =  \frac{x}{6 {}^{3} }  \\  \frac{32}{8}  =  \frac{x}{216} \\ x = 864

(iii)

\frac{32}{8}  =  \frac{108}{y {}^{3} }  \\   {y}^{3 }  = 27 \\ y =  \sqrt[3]{27 }  \\ y = 3

3 0
2 years ago
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