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lakkis [162]
3 years ago
5

Khan Academy

Mathematics
1 answer:
malfutka [58]3 years ago
7 0

Answer:

The variable d stands for how many calories she used.

Step-by-step explanation:

the problem says that she uses 1 calorie per minute while walking, and then it says that she walked 12 minutes. 12×1= 12 calories

d=12 calories which equals to the 12 minutes she walked

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Nth term of 45,51,57,63,69
Vikentia [17]
Answer 93. Just keep adding 6
4 0
3 years ago
Please help me with this trigonometry question. Brainliest available.
faltersainse [42]
Considering the angle a by cosine rule
11^2 =7 ^2 +15^2 - 2(7)(15)cos(a)
When you do the maths,
Cos(a) =153/210 =0.729
a= cos inverse of 0.729
a=43 degrees


Considering angle b
7^2=15^2 +11^2 -2(11)(15) cos(b)
This will result in cos(b) =297/330=0.9
b= cos inverse of 0.9 = 25.8 degrees


Considering angle c
15^2=7^2 +11^2 - 2(11)(7) cos(c)
Cos(c) will be = -55/154 = -0.357
c= cos inverse of -0.357=110.9

Comparing the angles a,b and c,
C is the largest size in the triangle with an angle of 110.9 degrees

Am I right please ??
5 0
2 years ago
What is the greatest number of right angles a triangle can contain?
Firdavs [7]

Answer:

C.0

since it's literally impossible for a triangle to have a right angle only squares and other shapes. triangles are made of acute angles

6 0
3 years ago
Which symbol makes this statement true? 0.35 ____ 1/4<br> &lt;, &gt;, =
alekssr [168]

Answer:

>

Step-by-step explanation:

if you change 1/4 into a decimal, it turns into 0.25. So 0.35 is greater than 0.25

4 0
3 years ago
What is the slope of the line that contains these points?
kati45 [8]

Answer:

m=-7

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from chart.</em>

Point (39, 36)

Point (40, 29)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{29-36}{40-39}
  2. Subtract:                       m=\frac{-7}{1}
  3. Divide:                          m=-7
8 0
3 years ago
Read 2 more answers
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