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allochka39001 [22]
3 years ago
8

-2.8f + 0.7f - 14 - 4

Mathematics
2 answers:
fredd [130]3 years ago
7 0

Answer:

im prettty sure it'd be −2.1f−18

Step-by-step explanation:

den301095 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

-2.8f + 0.7f - 14 - 4

- 2.1f - 18

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If 5(3x-7)=20, then what is 6x-8 ?
Colt1911 [192]
First solve for x in the first equation. So you'll have to substitute,
5(3x-7)=20
15x-35=20
Then add 35 to both sides.
15x=55
Divide 55 by 15.
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Then plug in 3.7 for x in 6x-8
6(3.7)-8
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3 0
3 years ago
Determine the number of possible triangles, ABC, that can be formed given angle A = 30°, a = 4, and b = 6.
Sophie [7]

Answer:

Step-by-step explanation:

Alright, lets get started.

using Sine Law,

\frac{sinA}{a}=\frac{sinB}{b}

\frac{sin30}{4}=\frac{sinB}{6}

sinB=0.75

angle B = 48.6

Another angle will be

angle B' = 180-48.6 = 131.4

considering angle B, angle C = 180 - (48.6+30)=101.4

considering angle B', angle C' = 180-(131.4+30)=18.6

\frac{sinA}{a}=\frac{sinC}{c}

\frac{sin30}{4}=\frac{sin101.4}{c}

c = 7.84

Similarly, finding c'

\frac{sinA}{a}=\frac{sinC'}{c'}

\frac{sin30}{4}=\frac{sin18.6}{c'}

c'=2.55

Hence two triangles are possible with below details:  :   Answer

A = 30, B = 48.6, C = 101.4, c = 7.84

A = 30, B' = 131.4, C' = 18.6, c' = 2.55

Hope it will help :)

5 0
3 years ago
What number does y stand for in this equation?
mr_godi [17]

Answer:

B. 21

Step-by-step explanation:

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Answer:

2 real roots

Step-by-step explanation:

If the discriminant is any positive number, that means the quadratic will have 2 real roots, or solutions.

Since the discriminant, 36, is a positive number, this will apply.

So, if the discriminant is 36, there will be 2 real roots.

4 0
3 years ago
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Which statement is trure?​
krek1111 [17]

Answer:

I think it is A, or ,D

Step-by-step explanation:

3 0
2 years ago
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