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Alborosie
3 years ago
9

Which angles are acute?

Mathematics
2 answers:
Alex3 years ago
7 0
Any angle that is less than 90 degrees is an acute angle, so angles X, Y, Z are acute angles.
mixer [17]3 years ago
4 0

angles x y z are all acute because they are less than 90 degrees

]

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Sylvia wants to save up $1375 to go on vacation to the beach and amusement parks. She saves $55 each week and now has $165 saved
laiz [17]

Answer:

Step-by-step explanation:

55x + 165 = 1375

so just add 55 till you get there

22

6 0
3 years ago
A researcher collects data on the relationship between the amount of daily exercise an individual gets and the percent body fat
fredd [130]

Answer: approximately 24

Step-by-step explanation:

We need to plot a regression line.

So we fit a model using the regression of Y on X, that an equation that predict Y for a given X using:

(Y -mean(Y ))= a(X-meanX)...........1

Where the formular of a is given the attachment.

N= the of individuals = 5

Y = amount of fat

X = time of exercise

mean(X )= sum of all X /N

= 131/5 = 26.2

mean(Y) = sum of all Y/N

= 104/5 = 20.8

a = N(SXY) - (SX)(SY)/ NS(X²) -(SX)²......2

SXY = Sum of Product X and Y

SX= sum of all X

SY = Sum of all Y

S(X²)= sum of all X²

(SX) = square of sum of X

a = -0.478

Hence we substitute into 1

Y-20.8 = -0.478 (X-26.2)

Y -20.8 = -0.478X - 12.524

Y = -0.478X + 33.324 or

Y = 33.324 - 0.478X (model)

When X = 20

Y = 33.324 - 0.478 × 20

Y = 33.324 - 9.56

Y = 23. 764

Y =24(approximately)

Carefully meaning of formula used in attachment to the solution they are the same.

4 0
3 years ago
The hanger diagram models the equation 2(n + 7) = 24. What could be the
baherus [9]

Step-by-step explanation:

first of all you times every number with two 2(n-7) then collect like terms then divide

4 0
2 years ago
Math i need help x-2y=1
arlik [135]

Answer:

Yo im taking the same thing tell me what answer you get because i eed it to.

Step-by-step explanation:

4 0
2 years ago
Please help me out!!!
professor190 [17]

Answer:

<u>416 square centimeters</u>

Step-by-step explanation:

Formula for finding area of a trapezoid :

<u>A = 1/2 x (a + b) x h</u>

  1. a and b = parallel sides of the trapezoid
  2. h = height of the trapezoid

Solving :

  • A = 1/2 x (38 + 14) x 16
  • A = 8 x 52
  • A = <u>416 square centimeters</u>
3 0
2 years ago
Read 2 more answers
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