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4 years ago

Help me please thank you

Mathematics

1 answer:

balandron [24]4 years ago

3 0

Answer:

36 miles

Step-by-step explanation:

If she can drive 12 miles only using 1/3 of a gallon of gas, that means if she uses a full gallon (3/3) she would be driving 36 miles.

12/1 x 1/3

36/1 x 3/3

Multiply the numerators by 3.

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If HJ=2x+5, JK=3x-7, and KH=18 what is the value of x

weqwewe [10]

Answer:

x = 4

Step-by-step explanation:

Given

HJ=2x+5
JK=3x-7
KH=18

We see J is between H and K, so

KH = HJ + JK
2x + 5 + 3x - 7 = 18
5x - 2 = 18
5x = 20
x = 4

3 0

3 years ago

PLEASE HELP

mihalych1998 [28]

Answer: The height is 4.472

Step-by-step explanation: That formula is Heron's formula.

Where "s" is calculated like this:

s = (a + b + c) / 2

In this case:

a = 14

b = 12

c = 6

replacing:

s = (14 + 12 + 6) / 2

s = 16

Now we calculate the area:

A ^ 2 = 16 * (16−14) * (16−12) * (16−6)

A ^ 2 = 1280

A = 35.777

The area of the triangle is:

A = b * h / 2

In this case we will take the base as the longest side of the triangle, that is to say = 14

Thus:

h = A * 2 / b

h = 35.777 * 2/16

h = 4.472

So the height is 4.472

8 0

2 years ago

Hector wants to run 18 hours by first track meet .suppose he runs the same number of hours and week 2 and week 3 of his training

ratelena [41]

Answer : do 18x3 and that's your answer

8 0

3 years ago

Read 2 more answers

For the expression 34- 34a to have a negative value, what must be true about the value of a ?

MArishka [77]

Answer:

a>0

Step-by-step explanation:

if a is negative then the subtraction sign would switch. therefore, for the expression to have a negartive value a must be greater than 0

5 0

3 years ago

Zach has a basic cell phone plan that does not include texting. He is going to add a multimedia texting package to his

attashe74 [19]

Package A is less expensive for Zach to send 250 multimedia texts each month.

Step-by-step explanation:

Given that,

Zach plans to send 250 multimedia texts each month.

Package A charges $0.25 per multimedia text with no monthly fees.

Package B charges $0.20 per multimedia text, but has a $15 monthly fee.

We need to find out which package is less expensive for Zach to add the plan.

The cost of 250 multimedia texts by package A :

⇒ Number of texts × cost per text

⇒ 250 × 0.25

⇒ 62.5

∴ The package A charges $62.5 for 250 multimedia texts.

The cost of 250 multimedia texts by package B :

⇒ (Number of texts × cost per text) + monthly fee

⇒ (250 × 0.20) + 15

⇒ 50 + 15

⇒ 65

∴ The package B charges $65 for 250 multimedia texts.

The Package A charges $62.5 which is less than package B charge of $65.

Hence, package A is less expensive.

6 0

3 years ago