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4 years ago

Chapter 1 MathXL: Mid-Chapter Practice and Review

Mathematics

1 answer:

Dmitrij [34]4 years ago

4 0

Answer:

25>t

Step-by-step explanation:

25 is more than t

if it is more than that means 25 is greater so "Pacman"would would eat the bigger number

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O is the center of the circle. Assume that lines that appear to be tangent are tangent. What is the value of x?

Arte-miy333 [17]

Answer:

x=48

Step-by-step explanation:

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3 years ago

PLZZZZZ HURRY WILL GIVE BRAINLIEST!!!!

Andreas93 [3]

Answer:

Option B is right answer.

Yes, because both figures are rectangles and all rectangles are similar.

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3 years ago

Read 2 more answers

Which scale is equivalent to 1 cm to 1 km?

AfilCa [17]

Answer:

1 to 100,000

Step-by-step explanation:

Centimeters and kilometers are scales of the official unit of length in the SI, the meters.

In a meter there are 100 centimeters, and in a kilometer there are 1000 meters, so in a kilometer there are 1000(100)cm ⇒ 100,000cm

So the scale of 1 centimeter to 1 kilometer is:

1 to 100,000

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3 years ago

Which expressions are equivalent to 42-5? Choose all the correct answers. Show your work in arriving at your answers.

frozen [14]

Answer:

B, C, E

Step-by-step explanation:

<u />

<u>Exponent Rules</u>

$a^b \cdot a^c=a^{b+c}$

$\dfrac{a^b}{a^c}=a^{b-c}$

$a^n \cdot b^n=(ab)^n$

$a^0=1$

$\dfrac{1}{a^b}=a^{-b}$

$(a^b)^c=a^{bc}$

$\textsf{A}\quad42^{-3} \cdot 42^8=42^{-3+8}=42^5$

$\textsf{B}\quad \dfrac{42^{-7}}{42^{-2}}=42^{-7-(-2)}=42^{-5}$

$\textsf{C}\quad \dfrac{6^{-5}}{7^5}=6^{-5} \cdot 7^{-5}=(6 \cdot 7)^{-5}=42^{-5}$

$\textsf{D}\quad 42^0 \cdot 42^5=1 \cdot 42^5=42^5$

$\textsf{E}\quad \left(\dfrac{1}{42^{-5}}\right)^{-1}=(42^5)^{-1}=42^{-5}$

$\textsf{F}\quad \left(\dfrac{6^{-5}}{7^5}\right)^{-1}=\left(6^{-5} \cdot 7^{-5}\right)^{-1}=\left(\left(6 \cdot 7\right)^{-5}\right)^{-1}=42^{-5(-1)}=42^5$

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2 years ago

Read 2 more answers

Let Ir = 17 at an angle of 40° and s = 14 at an angle of 160°. Which expression represents r + s|?

vladimir1956 [14]

Answer:

B. I got it right on the quiz

Step-by-step explanation:

6 0

3 years ago