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3 years ago

Quick Check 1 2

Mathematics

1 answer:

mr Goodwill [35]3 years ago

6 0

C.) Same said interior angles

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Ana can finish a certain job in 10 hours. Together, Ana and Nina can finish the same job in 3 hours. How many hours can Nina fin

Over [174]

Answer: 4.5 hours

<u>Step-by-step explanation:</u>

$Ana: \dfrac{1}{10}\ \text{job per hour}\\\\Nina: \dfrac{1}{x}\ \text{job per hour}\\\\Together: \dfrac{1}{3}\ \text{job per hour}\\\\\\Ana + Nina = Together\\\dfrac{1}{10}\quad +\dfrac{1}{x}\quad =\quad \dfrac{1}{3}\\\\\\\dfrac{1}{10}(30x)+\dfrac{1}{x}(30x) =\dfrac{1}{3}(30x)\\\\\\\rightarrow\quad 3x+30=10x\\\\.\quad 3x+30=10x\\\underline{-3x\qquad \quad -3x\quad}\\.\qquad \quad 30=7x\\\\.\qquad \quad \dfrac{30}{7}=\dfrac{7x}{7}\\\\\\.\qquad \quad \dfrac{30}{7}=x$

$.\qquad \quad 4.5=x$

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2 years ago

Can someone help me please

snow_tiger [21]

Answer:

Here you go

Step-by-step explanation:

BTW what is meant by point in the last blank?

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3 years ago

Read 2 more answers

Please help with this question

8090 [49]

The answer is 103 it's false

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3 years ago

Help me please and answer correctly people answer wrong on purpose

marishachu [46]

Sorry for not answering your question but please I am telling you guys don’t fall for someone when they send you links here like this first person above me he send a link don’t press it y’all don’t this is really bad it makes your phone really bad

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2 years ago

Pls I need help I will mark Brainly

Margarita [4]

Answer:

(10⁰x 10¹ x 1¹⁰)< (10⁰ + 10¹x 1¹⁰)<(10⁰ + 10¹ + 1¹⁰)< (10 x 10¹)

Step-by-step explanation:

increasing order-

(10⁰x 10¹ x 1¹⁰)

(10⁰ + 10¹x 1¹⁰)

(10⁰ + 10¹ + 1¹⁰)

(10 x 10¹)

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3 years ago