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Tems11 [23]
2 years ago
10

A groundskeeper needs grass seed to cover a circular field 380 feet in diameter A store sells 70 pound bags of grass seed. One p

ound of grass seed covers about 500 square feet of field. What is the smallest number of bags the groundskeeper must buy to cover the circular field
Mathematics
2 answers:
vovangra [49]2 years ago
8 0
4 bags.........................
SIZIF [17.4K]2 years ago
7 0

Answer:

4 bags

Step-by-step explanation:

the formula for area is A=3.14 x r^2, r is radius, found by 380 divided by 2, giving you A=3.14 x 190^2, giving you 113,000. divide by 500, giving you 226, then divide by 70, giving you 3 and a decimal, round up, and you get 4.

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If u-ai + bj and v-ci + dj are vectors, then which of the following statements is not true?
alukav5142 [94]

Answer:

Option C

Step-by-step explanation:

Given that u-ai + bj and v-ci + dj are vectors

We have dot product

u.v = (ai+bj).(ci+dj) hence inner product of u and v.  So option a is true

The dot product of u and v is a scalar is true because dot product is always a scalar

The dot product of u and v is a vector. is false because dot product is only a scalar and has no direction and hence cannot be a vector

The dot product of u and v is given by the expression ac+bd

True because we multiply corresponding i components and j components and add.

So only C is not true.

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2 years ago
Find the x and y intercepts of y=-x-8
aliya0001 [1]

Answer:

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4 0
2 years ago
Isabella worked 50 hours over the past two weeks, and she gets paid by the hour. During the first week of the two-week span, she
4vir4ik [10]

Answer:

$190.00

Step-by-step explanation:

285÷30=9.5

9.5×20=190

Hope this helps! :)

8 0
3 years ago
Plss answer my questions​
KIM [24]

Answer:

a) 450. b) 1:1.25 c) 32 rooms

Step-by-step explanation:

1. 100*4.5 = 450

2. 16:20 divide by 4 -> 4:5  (simplifies to 1:1.25)

3. 64/2 = 32 rooms needed. They have 16.

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8 0
2 years ago
Read 2 more answers
What is the sum of 2x^2 and 2x^3
jeyben [28]

For this case we have the following expression:

2x ^ 2 + 2x ^ 3

The terms are not similar, so they cannot be added.

<em>Examples of similar terms:</em>

x ^ 3 + x ^ 3 = 2x ^ 3\\3x ^ 4 + 2x ^ 4 = 5x ^ 4

Then, the expression given can only be rewritten as:

2 (x ^ 2 + x ^ 3)

This is taking common factor 2 to both terms.

Answer:

2 (x ^ 2 + x ^ 3)

7 0
3 years ago
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