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2 years ago

2. }(x - 10) = -4 X =

Mathematics

2 answers:

iren2701 [21]2 years ago

8 0

Answer:

x=2

Step-by-step explanation:

NikAS [45]2 years ago

5 0

SOLUTION:

( x - 10 ) = - 4 x

collecting like terms, we have:

x + 4 x = 10

5 x = 10

Divide both sides by 5,

x = 10 / 5

x = 2

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Molly took part in a math quiz and scored 55 points on 30 questions. Of the questions, there were 3-point word problems, 2-point

seropon [69]

Answer:

$3\ point\ word = 5$

$2\ point\ word = 15$

$1\ point\ word = 10$

Step-by-step explanation:

Given

Represent

3-point word with T;

2-point with U and

1-point with V

$U = 5 + V$ --- (1)

If total questions is 30, then

$T + U + V = 30$ --- (2)

If total points is 55, then

$3T + 2U + V = 55$ --- (3)

Substitute 5 + V for U in (2) and (3)

$T + U + V = 30$ --- (2)

$T + 5 + V + V = 30$

$T + 5 + 2V = 30$

$T + 2V = 25$ ---- (4)

$3T + 2U + V = 55$ --- (3)

$3T + 2(5 + V) + V = 55$

$3T + 10 + 2V + V = 55$

$3T + 10 + 3V = 55$

$3T + 3V = 55 - 10$

$3T + 3V = 45$

Divide through by 3

$T + V = 15$ ---- (5)

Subtract (5) from (4)

$(T + 2V = 25 )- (T + V = 15)$

$T - T + 2V - V = 25 - 15$

$V = 10$

Recall that:

$U = 5 + V$

$U = 5 + 10$

$U = 15$

Substitute 10 for V in (5)

$T + V = 15$

$T + 10 = 15$

$T = 5$

3 0

3 years ago

Which of the lines shown is a reasonable trend line for the scatter plot?

Nezavi [6.7K]

Answer:

blue

Step-by-step explanation:

it is going along with the points. we know it cant be red because that line is negative and the dots are going in a positive direction. we know it cant be pink bc it's not even going in the same direction as the points. so it has to be blue

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3 years ago

Please answer right away and don’t guess

DochEvi [55]

Answer: Third Option

$P (M\ or\ N) = 0.8$

Step-by-step explanation:

In this case, we have two non-disjoint events.

So the probability of M or N occurring is

$P (M\ or\ N) = P(M) + P(N) - P (M\ and\ N)$

We know that in this problem

$P(M) = 0.7\\\\P(N) = 0.5$

$P(M\ and\ N) = 0.4$

$P (M\ or\ N) = 0.7 + 0.5 - 0.4$

$P (M\ or\ N) = 0.8$

The answer is the third option

6 0

3 years ago

Desenați cinci puncte coliniare a b c d e în această ordine așa încât AB egal 5 cm BC egal 5 mm CD egal 15 mm și d egal 0,7 dm

madam [21]

Answer:

me no speak espanol sorry

6 0

3 years ago

Write the equation of the line which contain the point (1, 2) and slope = - 4 .

a_sh-v [17]

Step-by-step explanation:

y=mx+c

2=(-4)(1)+c

2=-4+c

c=2+4

c=6

therefore the answer is...

y=-4x+6

6 0

3 years ago