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Naya [18.7K]
3 years ago
10

Please? I need help here

Mathematics
1 answer:
Yuki888 [10]3 years ago
3 0

Answer:

<h2>D</h2>

Step-by-step explanation:

If pair of ratios does form a true proportion then:

a:b=c:d\to\dfrac{a}{b}=\dfrac{c}{d}\to ad=bc

A)\\\\8:14=20:35\to\dfrac{8}{14}=\dfrac{20}{35}\\\\(8)(35)=(14)(25)\\\\280=280\qquad\bold{TRUE}\\\\b)\\\\\dfrac{6}{10}=\dfrac{15}{25}\\\\(6)(25)=(10)(15)\\\\150=150\qquad\bold{TRUE}

c)\\\\\dfrac{9}{5}=\dfrac{27}{15}\\\\(9)(15)=(5)(27)\\\\135=135\qquad\bold{TRUE}\\\\d)\\\\12:15=30:50\to\dfrac{12}{15}=\dfrac{30}{50}\\\\(12)(50)=(15)(30)\\\\600=450\qquad\bold{FALSE}

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HELP!!! Cheryl writes 7 fewer posts than Kevin on a social media site. Answer the questions to write an algebraic expression. Th
hammer [34]

Answer:

3

Step-by-step explanation:

cause if she writes 4 posts and kevin writes 21 than she only have 3 posts left that she have write

7 0
2 years ago
Any number divisivble by 2 is also divisible by 8. Find a counter example to show that the conjecture is false.
Vladimir [108]
In the case of whole numbers, dividing 2 by itself would prove the conjecture false.


2/2 = 1

2/8 = 0.25
8 0
3 years ago
Find the domain of the function.
timurjin [86]

When taking square roots, you can't take square roots of negative roots of negative numbers. So, what will work for the domain of u(x) is what makes u(x) zero or more. We can make an inequality for that.

u(x) ≥ 0.

\sqrt{9x+27} \geq  0

9x + 27 ≥ 0 by squaring both sides

9x ≥ -27

x ≥ -3

So the domain of the function is when x ≥ -3 is true.

5 0
3 years ago
May I know the answer of number 1 pls quick
tino4ka555 [31]

n=9 would be your answer. Hope I helped

5 0
3 years ago
Read 2 more answers
Help soon
frozen [14]

Answer:

the answer is 3/100

Step-by-step explanation:

the probability=

pr(blue)*pr(black)

=3/10*1/10

=3/100

hope this helps

please give brainest

4 0
2 years ago
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