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svetlana [45]
3 years ago
6

If r + 14 = -9, what justifies r = -23

Mathematics
2 answers:
kramer3 years ago
8 0

Answer:

you subtract 14 from -9 and that justifies it

Step-by-step explanation:

Hope this helps

Inessa05 [86]3 years ago
8 0

Answer:

ummm i really dont known to be honest with you

Step-by-step explanation:

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Find the value of 7v-6 given that -8v-9=7 Simplify your answer as much as possible 7v-6=
evablogger [386]

Answer:

-20

Step-by-step explanation:

-8v-9=7

Add 9 to each side

-8v-9+9=7+9

-8v = 16

Divide by -8

-8v /-8 = 16/-8

v = -2

Now find

7v -6

7(-2) -6

-14 -6

-20

4 0
3 years ago
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We want to partition 100 mL into 10 equal parts. How many milliliters should we pour in each cup?
satela [25.4K]
10 mililiters per cup
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Simplify x2y5<br> ____<br> x6y3
viva [34]

Answer:

y^2/x^4

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6 0
3 years ago
PLEASEEE I DONT KNOW HOW TO DO ITTTT. THE 35.8 IS RIGHT BUT I CANT GET MEASURE OF ANGLE C AND A I GOT 46.2 for A AND 70.8 for C
Rashid [163]

Answer:

Hope it helps....!!!!!

Step-by-step explanation:

AB = c = 38

BC = a = 29

AC = b

Angle ABC = 63 degrees

Solving for AC   "b":

Cosine rule: c^2 = a^2 * b^2 -2ab * cos C

38^2 = 29^2 * b^2 - (2* 29) * b * (cos 38)

1444 = 841 * b^2 - 58 * b * 0.955

(1444 + 58)/0.955 = b^2 * b

1572.77486911 = b^3

11.62935 = b

11.63 = b (rounded to two decimal places)

Now solving for angle A:

Sine rule: a/sinA = b/sinB

29/sinA = 11.63/sin(63)

sinA/29 = sin(63)/11.63

sin A = (sin(63)/11.63) * 29

sin A = 0.41731

A = sin^-1 (0.41731)

A = 24 degrees 39 minutes 53 seconds

Now solving for angle C:

Sine rule: c/sinC = b/sinB

38/sinC = 11.63/sin(63)

sinC/38 = sin(63)/11.63

sin C = (sin(63)/11.63) * 38

sin C = 0.54682

C = sin^-1 (0.54682)

C = 33 degrees 8 minutes 56 seconds

3 0
3 years ago
What is the Area of an equilateral triangle whose sides are 8 feet long each?
Bess [88]

Answer:

27.71281 ft

Step-by-step explanation:

5 0
3 years ago
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