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Igoryamba
2 years ago
13

PLSS HELP I NEED THIS ASAP!!

Mathematics
2 answers:
Nata [24]2 years ago
8 0

Let that angle be x

Apply angle sum property

  • x+45+40=180
  • x+85=180
  • x=180-85
  • x=95°
Nadya [2.5K]2 years ago
5 0

Answer:

<u>b) 95 degrees</u>

Step-by-step explanation:

Remember that the internal angles of a triangle add up to 180°.

Solving :

  • 45° + 40° + ∠x = 180°
  • ∠x + 85° = 180°
  • ∠x = <u>95 degrees</u>
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Ryan's car used 10 gallons of gas to drive 395 miles. At what rate does his car use gas in miles per gallon? Express your answer
Natali5045456 [20]

Answer:

39.5 miles per gallon

Step-by-step explanation:

395÷10=39.5.

Ryans car uses gas in 39.5 miles per gallon.

7 0
3 years ago
Please help with all!!
EastWind [94]

Answer:

1. x=7

2. x= -12

3.x=12

4.x=9

5. x= -5

6. x=7

Step-by-step explanation:


4 0
3 years ago
Hurry pls <br><br>What is the LCM of 15 and 21 <br><br>The LCM is ____​
Mrrafil [7]

Answer:

105

Step-by-step explanation:

First of all this is to easy if you don't know how to do this then your in danger of math and you should ask your math teacher for private online lesson regarding this.

LCM of 15,21

3 | 15 | 21

5 | 5 | 7

7 | 1 | 7

   | 1 | 1

LCM: 3x5x7 -> 105

3 0
3 years ago
The mean annual tuition and fees for a sample of 14 private colleges in California was $37,900 with a standard deviation of $7,2
JulijaS [17]

Answer:

Z_{0.005}>Z H₀ is wrong and other is correct. IT means $35000 is not mean value.

Step-by-step explanation:

Two hypothesis:

H₀=$35,000

Hₐ≠$35,000

Test Formula:

Z=\frac{(X-u)}{\frac{S}{\sqrt{n} } }

Where:

X is the mean value=$37,900

u is the value with 0.01 significance=$35000

S is the standard deviation

n is the sample size

Z=\frac{(37900-35000)}{\frac{7200}{\sqrt{14} } }

Z=1.507

Z with 0.01 significance:

0.01/2=0.005=0.05%

Degrees of freedom=14-1=13

From t distribution table at 0.05% and 13 dof:

Z_{0.005}=4.221

So

Z_{0.005}>Z H₀ is wrong and other is correct. IT means $35000 is not mean value.

7 0
4 years ago
in your math class there are 2 Boys for every 3 girl.which of the following be the ratio of Boys and girl in the class?​
4vir4ik [10]

Answer:

B. 14/21

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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