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Sever21 [200]
3 years ago
10

Factor (16a2 - 49) completely

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
5 0

Answer:

(4a+7)(4a-7)

Step-by-step explanation:

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A train has 6 identical passenger cars that are each 18 m long.
Gnesinka [82]

Answer:

59m

Step-by-step explanation:

No of passenger cars in the train = 6

length of each passenger cars = 18m

total length of 6 passenger cars = 18 * 6 = 108 m

length of caboose = 10m

total length of train when caboose is included = 108 m + 10 m = 118m

_____________________________________________

Let the length of truck be X m

given that length of train is twice of length of truck = 2*X

but length of train as found above is 118 m

this implies

2X = 118

X = 118/2 = 59m

Therefore length of truck is 59m

5 0
3 years ago
Find the sum of the first 990 positive even integers calculator
Tema [17]
Use the sequence formula and the answer will be 981,090.
6 0
3 years ago
MARKING BRAINLIEST!
Irina-Kira [14]

Answer: Felix has a job that pays 100 dollars an hour,  If he makes 2500 dollars a week how many hours does he work each day.

100x = 2500

hope this helps mark me brainliest please

6 0
3 years ago
Daniel and Sydney are getting high-speed Internet access at the same time. Daniel's provider charges $60 for installation and $4
Misha Larkins [42]

Answer:

5 months

Step-by-step explanation:

Daniel's provider charges $60 for installation and $45.95 per month. Sydney's provider has free installation and charges $57.95 per month

Let x = number of months

Daniel = 60 + 45.95x

Sydney = 0 + 57.95x

Equate both equations

60 + 45.95x = 0 + 57.95x

Collect like terms

60 - 0 =57.95x - 45.95x

60 = 12x

Divide both sides by 12

x = 60 / 12

= 5

x = 5 months

Daniel and Sydney would have paid the same amount for high-speed Internet service after 5 months

6 0
3 years ago
Your dog eats 7/8 lb of food in 4 meals , how many meals will it take your dog to eat 1 lb of food
choli [55]

Answer:

x = 32/7, or 4 4/7 meals

Step-by-step explanation:

Write and solve an equation of ratios, as follows:

 7/8 lb           4 meals

------------        -------------

    1 lb                   x

x will be the number of meals necessary for the dog to eat 1 lb of food.

Cross-multiplying, (7/8)x = 4.

Multiplying both sides by 8/7 is an easy way to isolate x:

(8/7)(7/8)x = (8/7)(4)

or

              x = 32/7, or 4 4/7 meals

3 0
3 years ago
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