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3 years ago

10

H(x)=2x+5; find h(2)

1 answer:

shepuryov [24]3 years ago

4 0

Your answer is x = 9

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Three numbers are in the ratio 6:3:1, and the sum of these numbers is 420. If the first number is reduced by 50%, and the second

Naily [24]

$x:y:z\ \ \ \Leftrightarrow\ \ \ 6:3:1\\ \\ \frac{x}{z} =\frac{6}{1}\ \ \ \Rightarrow\ \ \ x=6z\ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{y}{z} =\frac{3}{1}\ \ \ \Rightarrow\ \ \ y=3z\\ \\x+y+z=420\ \ \ \Rightarrow\ \ \ 6z+3z+z=420\ \ \ \ \Rightarrow\ \ \ \ 10z=420\ /:10\\ \\z=42\ \ \ \Rightarrow\ \ \ \ x=6\cdot42=252\ \ \ \ and\ \ \ \ y=3\cdot42=126\\ \\ \\a=x-50\%x=50\%x= \frac{1}{2} \cdot252=126=3\cdot42\\ \\b=y+42=126+42=168=4\cdot42\\ \\c=420-126-168=126=3\cdot42\\ \\a:b:c\ \ \ \Leftrightarrow\ \ \ 3:4:3$

7 0

3 years ago

Please help me and please dont say something thats not related to my post. Also please explain your answer so I can understand i

Lelechka [254]

Answer:

A.9

Step-by-step explanation:

it asks how many the shelf can hold which would mean you should divide :

4 0

3 years ago

The product of two positive numbers is 1,800. One number is twice the other number. The equation to determine the two numbers, w

Art [367]

Answer:

600

Step-by-step explanation:

x+2x=1800

3x=1800

x=600

4 0

3 years ago

Read 2 more answers

For each relation, decide whether or not it is a function<br>

Digiron [165]

Answer:

Relation 1,2,and 4 are functions, but relation 3 not is a function.

Step-by-step explanation:

function 1 input, no function with the same input like m in relation 3.

5 0

3 years ago

A culture started with 1,000 bacteria. After 6

Naddik [55]

Answer:

1350

Step-by-step explanation:

1000 to 1100 is an increase of 100 bacteria per 6 hours

100/6 = 16.67 bacteria per hour

16.67 * 15 hours = 250

Total bacteria should be 1100+250= 1350

hope this helps :D

3 0

3 years ago

Read 2 more answers