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frosja888 [35]
3 years ago
5

Kathy starts with a number. She adds 3 to her number then doubles the result. Finally she subtract 7. If she ended with 9 what n

umber did she start with?
Mathematics
2 answers:
Ivahew [28]3 years ago
8 0

if she has 9, add 7. you have 16. divide it by half, 8. subtract 3 and you get 5.

andreyandreev [35.5K]3 years ago
8 0

The number she started with is 5

5 + 3 = 8

8 x 2 = 16

16 - 7 = 9


Hope this helps

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Give the boundaries of the indicated value.<br> 29.4 miles<br> The boundaries are<br> miles.
sineoko [7]

Answer:

The boundaries for the observed value, 42.8 miles are 42.75 miles up to 42.85 miles.

Step-by-step explanation:

hope it helps you friend ☺️

6 0
2 years ago
Who do you solve 36×14usingpartial products by using 2-digit by 2-digit help
topjm [15]

first you would do this



36

14


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3 years ago
Triangle A B C is shown. Angle A C B is a right angle. The length of hypotenuse A B is 12 centimeters, the length of C B is 9.8
RSB [31]

Answer: We can find angle BAC by using (1) SinA = 9.8/12

(2) CosA = 6.9/12

(3) TanA = 9.8/6.9

Step-by-step explanation: The question indicates that we have a right angled triangle ABC with the right angle at point C (that is, angle ACB is the right angle). Also the three sides have been labeled as AB equals 12 cm, CB equals 9.8 cm and AC equals 6.9 cm. Line AB has been identified as the hypotenuse and angle A (that is, BAC) is the reference angle. If angle A is the reference angle, then line CB facing angle A shall be the opposite side, while line AC is the adjacent (which lies between the reference angle and the right angle). Please see the attached diagram for details.

Having these details available, we can actually find angle A by using any of the three trigonometric ratios, since all three sides are given. Hence,

SinA = opposite/hypotenuse

SinA = 9.8/12

SinA = 0.8167

Checking with your calculator or table of values, A = 54.76 (approximately 55)

Also CosA = adjacent/hypotenuse

CosA = 6.9/12

CosA = 0.5750

Checking with your calculator or table of values A = 54.90 (approximately 55).

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Checking with your calculator or table of values A = 54.83 (approximately 55).

3 0
3 years ago
Can someone plz help me with this. 100 points and brainliest to the correct answer.
Brilliant_brown [7]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
PLease i need help i dont understand and i need an explantaion
zalisa [80]

Answer:

c) 56 m²

Step-by-step explanation:

Area of the figure =  area of triangle + area of rectangle

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length = 8 m

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Area = length * width

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base (b)= 4 m

height (h) =  8 m

Area=\frac{1}{2}bh\\\\ =\frac{1}{2}*4*8\\

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Area of the figure = 40 + 16

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4 0
2 years ago
Read 2 more answers
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