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tester [92]
3 years ago
5

2) If 20 workers can build a house in 45 days, how many more workers are needed

Mathematics
2 answers:
Phoenix [80]3 years ago
7 0
It’s D 18 if wrong I’m sorry but I took this test as well
Helga [31]3 years ago
3 0

Answer:

B

Step-by-step explanation:

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Tim and Al are bricklayers. Tim can construct an outdoor grill in 5 days. If Al helps Tim, they can build it in only 3 days. How
KATRIN_1 [288]

Answer:

It would take Al 7.5 days to build the grill alone.

Step-by-step explanation:

Since Tim and Al are bricklayers, and Tim can construct an outdoor grill in 5 days, and if Al helps Tim, they can build it in only 3 days, to determine how long would it take Al to build the grill alone should be done the following calculation:

1/5 + X = 1/3

0.20 + X = 0.333

X = 0.333 - 0.20

X = 0.1333333

X = 1 / 7.5

Therefore it would take Al 7.5 days to build the grill alone.

4 0
3 years ago
Find the square root of each. If the radicand is not a perfect square, estimate the square
Shkiper50 [21]
First off, the underline underneath means plus or minus, since when you take the square root of something, the answer can be negative or positive at the same time
1. 64 is a perfect square. 8 x 8 = 64, therefore it is +- (plus or minus) 8.

2. 45 is not a perfect square, so you can pull out numbers or plug into a calculator and estimate.
Both answers: Since 45 is divisible by 9 and five, you can break a nine into two threes, therefore pull it out, and since the answer is negative, you get:
-3(5)^0.5 (an exponent of one-half or 0.5 means square root)
If you solve by calculator, the answer is ~= (approximately equal to) -6.72

3. Since 90 is not a perfect square, repeat the previous question. 9 can go into 90, therefore you can pull out two threes and are left with: +-3(10)^0.5
Using the calculator, you get ~= +-9.49
3 0
4 years ago
Read 2 more answers
Lines c and d are parallel lines cut by transversal p. Which much be true by the corresponding angles theorem?
Flura [38]
Hello!
The corresponding angle theorem states that if two parallel lines are cut my a transversal, then the corresponding angles are congruent. Therefore, the correct answer is:
B. ∠2 = ∠6

If this was correct, please give it 5 stars!
4 0
3 years ago
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What is the slope of (9,6) (21,14)
Delvig [45]
You would write m= y2 -y1/x2-x1 so the answer would be 8/12
5 0
3 years ago
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Please help me with this questions I need the answer
Anastaziya [24]

Answer:

it rly doesnt matter

Step-by-step explanation:

try making _/

u can see that u can have 2 angles that you can make. Doesnt matter! :)

5 0
3 years ago
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