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ch4aika [34]
4 years ago
15

7m - 6 + 3m + 7 = 21

Mathematics
2 answers:
Hitman42 [59]4 years ago
8 0

Answer: m = 2

Step-by-step explanation: Coz I juss know

sveta [45]4 years ago
3 0

Answer:

m = 2

Step-by-step explanation:

7m - 6 + 3m + 7 = 21

(collect like terms)

10m + 1 = 21

10m = 21 - 1

10m = 20

(divide)

m = 2

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If the campers at Camp Grilled Meat prefer hot dogs to hamburgers by a ratio of 4:3, and they need 500 hot dogs, how many hambur
Morgarella [4.7K]

Answer:

375

Step-by-step explanation:500 equals 100% divide by 4 its 125 times 3 equals 375, your welcome

7 0
3 years ago
Read 2 more answers
Please help its really easy. you get extra help for this question.
nataly862011 [7]
There are 4 girls that the candy must be split between, Maeve and her 3 friends. They each get 5/24 of a pound.

3 0
3 years ago
The sides of a triangular plot are in the ratio of 3 : 5 : 7 and its perimeter is 300 m. Find its area. (Use 3 = 1.73)
eduard

Answer:

2598 units²

Step-by-step explanation:

Sum the parts of the parts of the ratio 3 + 5 + 7 = 15 parts

Divide the perimeter by 15

300 ÷ 15 = 20 ← value if 1 part, thus sides of triangle are

3 × 20 = 60

5 × 20 = 100

7 × 20 = 140

Using Hero's formula to calculate the area

A = \sqrt{s(s-a)(s-b)(s-c)}

where s is the semi perimeter and a, b , c are the sides of the triangle

s = 300 ÷ 2 = 150

let a = 60, b = 100 and c = 140, then

A = \sqrt{150(150-60)(150-100)(150-140)}

   = \sqrt{150(90)(50)(10)}

   = \sqrt{6750000} ≈ 2598 units²

7 0
3 years ago
Juan drove his car on a vacation trip. His odometer Read 1460.3 when he began and 1830.2 at the end. If he used 20 gallons of ga
Aleonysh [2.5K]

Answer:

Juan got 18.50 miles per gallon.

Step-by-step explanation:

We are given the following in the question:

Odometer in the beginning of trip = 1460.3 miles

Odometer at the end of trip = 1830.2

Gallons of gas used for trip = 20 gallons

Distance of trip =

= Odometer at the end of trip - Odometer in the beginning of trip

=1830.2-1460.3\\=369.9\text{ miles}

Thus, the trip was of 369.9 miles.

Miles per gallon =

=\dfrac{\text{Distance cover in trip}}{\text{Gallons of gas used}}\\\\=\dfrac{369.9}{20}\\\\=18.495\approx 18.50\text{ miles per gallon}

Thus, Juan got 18.50 miles per gallon.

5 0
3 years ago
Please view picture. Also please tell mehow you got the answer
Cerrena [4.2K]
Have a look at the image attachment. I've added the points A, B, C, D such that
A = base of the diving board pole, or location of the pool deck
B = the location 1.6 meters directly above point A
C = location of the person's eyes
D = diving board location
The goal is to find the length of segment AD

We are given
AB = 1.6
BC = 3.67
what we want to find is
BD = x

Due to the fact we have similar right triangles ABC and CBD, we can form the proportion below and solve for x
AB/BC = BC/BD
1.6/3.67 = 3.67/x
1.6*x = 3.67*3.67
1.6*x = 13.4689
1.6*x/1.6 = 13.4689/1.6
x = 8.4180625

So BD is 8.4180625 meters
Use this to find the length of AD
AD = AB + BD
AD = 1.6 + 8.4180625
AD = 10.0180625
which rounds to 10.0 meters when rounding to the nearest tenth (one decimal place)

------------------------------------------------------------------------------------------

Answer: choice D) 10.0 m

7 0
4 years ago
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