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Margarita [4]
2 years ago
13

A study in which conditions are under the direct control of the investigator.

Mathematics
1 answer:
Andre45 [30]2 years ago
3 0

Answer:

Experimental study

Step-by-step explanation:

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Thanks for your help
tresset_1 [31]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
can some on help me that way smarter wants the expression in words for 9×(8+4) and plz show me how to write it
torisob [31]
P - parenthesis
e - exponents
m - multiplication
d - division
a - addition
s - subtraction
_______________
so parenthesis is first, p, so 8 plus four equals to 12
multiplication is next, m, so 12 x 9 is 108
the answer is 108
6 0
3 years ago
Nadine can send or receive a text message for $0.15 or get an unlimited number for $5.00. Write and solve an inequality to deter
34kurt

Answer:

0.15*t < 5.00

33 texts

Step-by-step explanation:

given : $0.15 per text; unlimited cost is $5.00

# of texts = t

0.15*t < 5.00

t < 33.33; since you cannot make 33.33 texts i will round down to 33 texts.

Basically you can send or receive up to 33 texts and it will be cheaper than $5.00

0.15(33) = $4.95

at 34 texts, 0.15(34) = $5.10

8 0
3 years ago
Need answers to 30 and 31
Mice21 [21]

Answer:

C ; A

Step-by-step explanation:

<u>Question 30:</u>

Perimeter is the sum of all sides.

Perimeter for a recatngle can be found with the formula:

2(L+W)

Length is 7

Width is 4

Plug our values in.

2(7+4)

2(11)

22

Answer C

<u>Question 31:</u>

Circumference of a circle can be found with the formula:

πd.

Diameter of the given circle is 6.

Plug it in

6π

Round π to 3.14

6(3.14)

18.84

Answer A

5 0
2 years ago
How many times do you need to divide by ten to get from <br> 940.0 to 9.400
Gnesinka [82]
Twice. Dividing by ten will move the decimal point one place to the left. Rather than dividing by ten twice, you can divide by 100 once.
8 0
3 years ago
Read 2 more answers
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