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vichka [17]
2 years ago
11

What’s the expression of (9x2 - 2x + 7) + (4x2 + 7x + 2)

Mathematics
1 answer:
zloy xaker [14]2 years ago
6 0

Answer:

35+5x

Step-by-step explanation:

Pick each bracket and solve them separately. After solving, then you add them

the first bracket= (9x2-2x+7) = 25-2x ------- eqn 1

the second bracket= (4x2+7x+2) = 10+7x ---- eqn 2

Add eqn 1 and 2

= (25-2x) + (10+7x)

Grouping like terms,

= (25+10) + (-2x+7x)

=35+5x

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If K is the midpoint of JL, JK = 9x - 1 and KL = 2x + 27, find JL
snow_lady [41]

Answer:

JL = 70

Step-by-step explanation:

7 0
2 years ago
Consider the experiment of tossing a fair coin 3 times. For each coin, the possible outcomes are heads or tails.(a) List the equ
Burka [1]

Answer:

a)

H - H - H

H - H - T

H - T - H

H - T - T

T - H - H

T - H - T

T - T - H

T - T - T

b)

0.125 = 12.5% probability that all three coins come up heads.

0.875 = 87.5% probability that there will be at least one tail.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Question a:

Considering H for heads, T for tails:

H - H - H

H - H - T

H - T - H

H - T - T

T - H - H

T - H - T

T - T - H

T - T - T

(b) What is the probability that all three coins come up heads?

One outcome(H - H - H) out of 8, so:

p = \frac{1}{8} = 0.125

0.125 = 12.5% probability that all three coins come up heads.

Notice that the complement of the event "3 heads" is "at least one tail." Use this information to compute the probability that there will be at least one tail.

Sum of these probabilities is 100%, so:

1 - 0.125 = 0.875

0.875 = 87.5% probability that there will be at least one tail.

6 0
2 years ago
Check the following pair of linear equations is consistent or inconsistent
alexandr1967 [171]

Answer:

Consistent

Step-by-step explanation:

It was a solution.

8 0
3 years ago
Read 2 more answers
So desperate giving all of my points for this. Please show work and I'll give Brainliest. Please god please god please god
Alecsey [184]

here you go someone already has answered this question before <3

4 0
1 year ago
Find the GCF of 38, 76, and 114.
valentina_108 [34]
  • Answer:

<em>GCF = 38</em>

  • Step-by-step explanation:

<em>38 = 2×19</em>

<em>76 = 4×19 = 2²×19</em>

<em>114 = 2×3×19</em>

<em>GCF = 2×19 = 38</em>

3 0
2 years ago
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