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2 years ago

Two numbers are in the ratio 7:9. The smaller number is 42. what is the number?

Mathematics

2 answers:

ddd [48]2 years ago

7 0

Answer:

7/9 = 42/n.

7n = 378,

n = 54.

Step-by-step explanation:

sammy [17]2 years ago

3 0

42 = 7*6

so,

7:9 = 7*6 : 9*6 = 42:54

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If c(x)= 5/x-2 and d(x) = x + 3, what is the domain of (cd)(x)?

Nataly [62]

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3 years ago

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Kisachek [45]

Answer:

1 is multiplication

2 is division

3 is parentheses

4 is exponents

5 is parentheses

6 is exponents

7 is G.

8 is F.

9 is H.

10 is A.

11 is C.

12 is E.

13 is D.

14 is B.

Step-by-step explanation:

PEMDAS

parentheses

exponents

multiplication

division

addition

subtraction

do it in that order. but multiplication and division are on the same level so whichever comes firsts gets solved first and addition and subtraction are on the same level so whichever that come first gets solved first

7 0

3 years ago

Please help will give brainliest

garri49 [273]

Answer:

$b = 17$

Step-by-step explanation:

For this triangle we have to

$a=18.2\\B=62\°\\C=48\°$

We want to find the length of b

We know that the sum of the internal angles of a triangle is 180 °

$A + 62 +48=180\\\\A=180-62-48\\\\A=70\°$

Now we use the sine theorem to find the length of b:

$\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}$

Then:

$\frac{sin(A)}{a}=\frac{sin(B)}{b}\\\\b=\frac{sin(B)}{\frac{sin(A)}{a}}\\\\b=a*\frac{sin(B)}{sin(A)}\\\\b=(18.2)\frac{sin(62)}{sin(70)}\\\\b=17$

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3 years ago

Select the best answer 7 x (-3) x (-2)^2=

vlada-n [284]

7(-3)(-2)²

-21(-2)²

-21(4)

= -84

I hope that's help !

6 0

4 years ago

Rudi bought 12.5 yards of fabric to make pillows. Each pillow requires 1.75 yards of fabric. Use compatible numbers to estimate

Ipatiy [6.2K]

Hi there!

Using compatible numbers it would be:

12 ÷ 2 = 6.

Now when you divide it, the answer would be close to 6.

So, 12 ÷ 2 = 6 would be using compatible numbers.

Hope this helps ;)

8 0

3 years ago

Read 2 more answers

Two numbers are in the ratio 7:9. The smaller number is 42. what is the number?​

Two numbers are in the ratio 7:9. The smaller number is 42. what is the number?