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3 years ago

Please help I will mark Brainly!!

Mathematics

1 answer:

gogolik [260]3 years ago

6 0

Answer:

YOUR ANSWER WOULD BE THE SECOND ONE-

1800X + 3400Y <64,000

THE REASON WHY 64,000 IS GREATER IS BECAUSE IF YOU ADD 1800 AND 3400 YOU WOULD GE 5,200

I JUST DID THIS AND GOT IT RIGHT HOPE THIS HELPS

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The ratio of Sam's age to Hank's age is 5 to 3. If the sum of their ages is 24, how old is Hank? A. 21

Maru [420]

Answer:

Hank = 9

Step-by-step explanation:

Let Sam = S

Let Hank = H

S + H = 24

S/H = 5/3 Cross multiply

3S = 5H

S = 5/3 * H

S + H = 24

(5/3)*H + H = 24

(5/3)*H + 3/3*H = 24

8/3 * H = 24

8/3 * 3/8 * H = 3/8 * 24

H = 9

5 0

4 years ago

a 9ft ladder is placed 4.5 feet from the base of a wall. How high up will the ladder reach? Round to the nearest hundredth.

spin [16.1K]

Answer:

$\huge\boxed{7.79 \ \text{feet}}$

Step-by-step explanation:

We know that we have a 9 foot long ladder resting upon a wall, with an unknown height, but the ladder is 4.5 feet away from the wall.

This can be represented as a triangle, where x is the unknown side.

| \

x | \ 9

| \

|_____\

4.5

We can use The Pythagorean Theorem to find the value of x. The theorem states that $a^2+b^2=c^2$ , where a and b are the lengths of the legs and c is the length of the hypotenuse.

However, we already know the hypotenuse and one leg. Therefore we can substitute inside the equation to find the missing value.

$a^2 + 4.5^2 = 9^2\\\\a^2 + 20.25 = 81\\\\a^2 = 60.75\\\\a \approx 7.79$

Hope this helped!

7 0

3 years ago

Help on questions 37 and 38 please!

jeka94

Answer:

Step-by-step explanation:

38.

$M=\frac{1}{2} (x_{1}+x_{2})\\2M=x_{1}+x_{2}\\x_{1}=2M-x_{2}$

37.

$S=\frac{ab^2}{3} \\3S=ab^2\\b^2=\frac{3S}{a} \\b=\pm\sqrt{\frac{3S}{a} }$

6 0

3 years ago

Brainliest to correct

nataly862011 [7]

Answer:

its equals the same, the third one. this is very easy.

4 0

3 years ago

If K is the midpoint of JL, JK = 8x + 11 and KL = 14x – 1, find JL.

masha68 [24]

Answer:

$JL=54$

Step-by-step explanation:

We are given that K is the midpoint of JL. Using this information, we want to find JL.

By the definition of midpoint, this means that:

$JK=KL$

Substitute them for their equations:

$8x+11=14x-1$

Solve for x. Subtract 8x from both sides:

$11=6x-1$

Add 1 to both sides:

$6x=12$

And divide both sides by 6. Hence:

$x=2$

JL is the sum of JK and KL. Hence:

$JK+KL=JL$

Since JK = KL, substitute either one for the other:

$JK+(JK)=2JK=JL$

Substitute JK for its equation:

$2(8x+11)=JL$

Since we know that x = 2:

$2(8(2)+11)=2(16+11)=2(27)=54=JL$

Thus:

$JL=54$

3 0

3 years ago