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3 years ago

PLSSSSSS HELPPPP PLSSSS 15 POINTSSSS ILL SENDD 20 MORE IF U HELPPPP PLSSSSSSSS

Mathematics

1 answer:

Helen [10]3 years ago

8 0

Answer:

1 is B

2 is B

3 is stream line body and fluke both help in swimming and both are independent envolved that is their ancestors don't match

Step-by-step explanation:

You might be interested in

Using ABC, identify the ratio for sine of C

Stolb23 [73]

Answer:

BA / AC

Step-by-step explanation:

Given the triangle ABC;

To obtain the Sin C

Defining the attached triangle with respect to C:

Sine = opposite / hypotenus

Sin C = BA / AC

Hence, the ratio of sinC is BA /AC

4 0

2 years ago

Benecio worked 40 hours at his two jobs last week. He earned $20 per

miv72 [106K]

Answer:

25 hours on his week job and 15 hours on his weekend job

Steps

20 times 25 is 500 for pay

18 times 15 is 270 for pay

Just add them

500 plus 270 equals 770 for pay

And 15 plus 25 is 40 total in hours

7 0

3 years ago

What is the value of X<br> 8+4x+2+56-42x

Stels [109]

Answer:

i cannot answer the value of X unless there is an equal sign but the equation simplified is 66-38x

Step-by-step explanation:

3 0

3 years ago

Solve for the following equation step by step and justify your steps when using an exponential property.

mel-nik [20]

x = $\frac{5}{7}$

using the ' laws of exponents '

• $a^{m}$ × $a^{n}$ = $a^{( m + n )}$

• $a^{m}$ ÷ $a^{n}$ = $a^{(m - n)}$

• ( $a^{m}$ )^n = $a^{mn}$

$7^{2}$ × $7^{3}$ = $7^{5}$ ÷ $7^{3x}$ = $7^{5 - 3x}$

$7^{4x}$ = $7^{5 - 3x}$

equating the exponents since bases on both sides are 7

4x = 5 - 3x

7x = 5 ⇒ x = $\frac{5}{7}$

4 0

3 years ago

) A watershed experiences a rainfall of 8 inches. What is the runoff volume when the curve number is 80

finlep [7]

Answer:

5.625 inches

Step-by-step explanation:

Given that:

Total Rainfall in inches (P) = 8 inches

The runoff volume (in inches) Q = ???

The curve number CN = 80

Recall that: The runoff volume can be calculated by using the formula:

$Q = \dfrac{(P-0.2S)^2}{(P+0.8S)}$ for P > 0.2S

Q = 0 for P < 0.2S

$S = \dfrac{1000}{CN}-10$

where:

curve number CN = 80

$S = \dfrac{1000}{80}-10$

S = 2.5 inches

Since the rainfall (P) is greater than 0.25

Then:

$Q = \dfrac{(P-0.2S)^2}{(P+0.8S)}$

$Q = \dfrac{(8-0.2(2.5))^2}{(8+0.8(2.5))}$

$Q = \dfrac{(8-0.5)^2}{(8+2)}$

$Q = \dfrac{(7.5)^2}{(10)}$

$Q = \dfrac{(56.25)}{(10)}$

Q = 5.625 inches

Thus, the runoff volume = 5.625 inches

4 0

3 years ago