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Stella [2.4K]
1 year ago
8

Marika is training for a track race. She start sprinting by 100 yards. She gradually increases her distance, adding 4 yards a da

y for 21 days. the explicit formula that models this situation is an=100+(n-1)4. how far does seh sprint on day 21
Mathematics
1 answer:
Hunter-Best [27]1 year ago
8 0

Answer:

  180 yards

Step-by-step explanation:

The number of yards she sprints on day 21 can be found by evaluating the formula with n=21.

<h3>Solution</h3>

  a21 = 100 +(21 -1)4 = 100 +(20)(4) = 100 +80 . . . . . use 21 in place of n

  a21 = 180

Marika sprints 180 yards on day 21.

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What does congruent mean
AysviL [449]

Answer:

If two figures have the same size and shape, then they are congruent. so if they have the same shape and size even if they are flipped or mirrored they are congruent.

Step-by-step explanation:

The term congruent is often used to describe figures like this, the pictire below. if you look up congruent shapes and look at many examples that will definitely help you understand alot more better what congruent means.

5 0
3 years ago
A rectangular prism has a height of 4 meters, a surface area of 96 square meters, and a base area of 8 square meters. Calculate
tatyana61 [14]
The perimeter is 56m

H = 4m
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5 0
3 years ago
Shandra's parents put $1,500 in her bank account for college tuition. At an interest rate
gavmur [86]

Answer:

$6,427.99

Step-by-step explanation:

-We first find the effective annual interest rate as follows:

i_m=(1+i/m)^m-1\\\\=(1+0.0825/2)^2-1\\\\=0.084202

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Hence, the amount after 18 years is $6,427.99

5 0
3 years ago
Twelve large bottles of water cost $9.How many bottles can you buy for $3?
Andrej [43]

Answer: 4 large bottles of water for $3.

Step-by-step explanation: To find how many large water bottles you can buy with $3, you’ll have to divide 12 by 3 which equals to 4. You can check your answer by multiplying 4 x 3 which equals to 12, which is the original amount of large water bottles you can buy for $9.

5 0
3 years ago
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Answer:

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Step-by-step explanation:

6 0
3 years ago
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