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2 years ago

Please help me solve b,c,d asap i need it in 10 min!!!

Mathematics

2 answers:

aksik [14]2 years ago

8 0

X/3 - 5 is the answer

Vaselesa [24]2 years ago

7 0

Answer:

These answer are written in standard form

Step-by-step explanation:

D. The sum of four and twice a number = 2x+4

C. Seven more than three times a number, all multiplied by itself = 3x+7

B. Nine less than a number, all divided by three = $\frac{n-9}{3}$

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2.3×10⁹=(1×10³)(2.3×10^n)

kotegsom [21]

Answer:

n = 6

Step-by-step explanation:

2.3 × $10^{9}$ = (1 × 10³)(2.3 × $10^{n}$ )

(1 × 10³)(2.3 × $10^{n}$ ) = (1)(2.3) × (10³)( $10^{n}$ ) = 2.3 × $10^{3+n}$

2.3 × $10^{3+n}$ = 2.3 × $10^{9}$ ⇒ 3 + n = 9 ⇒ n = 6

5 0

2 years ago

Is y-2x=0 proportional?

xz_007 [3.2K]

Yes because it has 0 in it

8 0

2 years ago

If f(x) = -2x^2 + 1 and g(x) = 3x, evaluate f(x) / g(x) for x = 2

adelina 88 [10]

I think that the answer is A.

3 0

3 years ago

I need help plzzzzzzzzzzzzzzzzzzzzz

blagie [28]

Answer:

Step-by-step explanation:

Start box

180 = 89+42+x

180-89-42=x

49 = x

2nd box

180 = 84+58+x

180-84-58=x

38 = x

3rd box

180=74+2x

180-74=2x

106/2 = x

53 = x

4th box

180=102+2x

180-102=2x

78/2 = x

39 = x

4th box

180 = 73+81 +x

180-73-81=x

26 = x

5th box

180=2*54+x

180 - 2*54 = x

72 = x

6th box

180=62-2x

180-62=2x

118=2x

118/2=x

59 = x

7th box

180 = 2*68 + x

180-2*68=x

44 = x

3 0

2 years ago

I need #1 done (show work) will give brainliest

allochka39001 [22]

Step-by-step explanation:

Statement Reason

∠5 and ∠7 are vertical angles Vertical angles theorem

m∠5 = m∠7 Definition of vertical angles

m∠5 = -2(3x - 4), m∠7 = 3(x - 3) - 1 Given

-2(3x - 4) = 3(x - 3) - 1 Substitution property of equality

-6x + 8 = 3x - 9 - 1 Distributive property

3x + 6x = 8 + 10 Addition property

9x = 18 Addition property

x = 18/9 Division property

x = 2 Proved

6 0

2 years ago