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Lerok [7]
3 years ago
5

Mike built a model of a 42 ft building using a scale of 2 cm = 3 ft. What is the height of the model?

Mathematics
1 answer:
Blababa [14]3 years ago
5 0
Ok so important numbers 42 ft, 2cm, 3 ft and lets take height as x

if 2cm=3ft than x cm= 42 ft
2 = 3
-------
x= 42
cross multiply divide
(42)2/3
84/3
28 
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Help me pls pls pls​
9966 [12]

Answer:

B

Step-by-step explanation:

Plug in a x-value and see which table matches the result.  Plug in 1.

f(x) = 7 - 4.5x

f(1) = 7 - 4.5(1)

f(1) = 7 - 4.5

f(1) = 2.5

The table that matches an input of 1 with an output of 2.5 is B.

6 0
3 years ago
An amount of $700 was invested at 7% for 7 months. What is the interest? Round your
Levart [38]

Answer:

49 dollars

Step-by-step explanation:

700 times .07

7 0
3 years ago
A survey of 70 students from a high school is conducted. From this sample, it is found that 58 students have sent a text message
Irina-Kira [14]
Number of students who have sent a text message only is given by the difference between those that have sent a text message and those that have done both.
i.e. Number of students who has sent a text message only = 58 - 12 = 46

Number of students who have uploaded a selfie only is given by the difference between those that have uploaded a selfie and those that have done both.
i.e. Number of students who have uploaded a selfie only = 21 - 12 = 9

The total number of students surveyed is 70.
Let the number of students who have neither sent a text message nor taken a selfie today  be x, then
46 + 9 + 12 + x = 70
67 + x = 70
x = 70 - 67 = 3

Therefore, 3 students neither sent a text message nor taken a selfie today.

The number of students that have sent a text message or have taken a selfie today is given by the sum of the number of students that have sent a text message and the number of students that have taken a selfie less the number of people that have done both.
i.e. number of students that have sent a text message or have taken a selfie today = 58 + 21 - 12 = 67.
7 0
3 years ago
Solve 2x+y=3 x+y=5 in substitution method
Nastasia [14]
2x+y=3
- x+y=5
---------------
x=-2

2(-2)+y=3
y=7

-2+y=5
y=7

(-2,7)
4 0
3 years ago
Can someone answer this for me pls
lions [1.4K]

Answer:answer from math papa is b=−n+30

pictures is blurry please send another

6 0
3 years ago
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