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zhuklara [117]
3 years ago
9

I really need help with my math homework anyone

Mathematics
1 answer:
Art [367]3 years ago
5 0

Answer:

Step-by-step explanation:

First one:

x² + 13x + 15 = 2x + 5

First, combine like terms and place all your results on the left side of this equation:  x² + 11x + 10 = 0.  Note that (1)(10) = 10 and that 1 + 10 = 11.  Thus, this last result factors easily into (x + 1)(x + 10) = 0, so that x + 1 = 1 and x = -1 and also x + 10 = 0 yields x = -10.  The solutions (roots, zeros) of the given equation are {-10, -1}.

Second one:

x² = 2x + 63

Again, consolidate all three terms on the left side with "=0" on the right side:

x² - 2x - 63 = 0.  Note that 7(-9) = -63 and that -9 + 7 = -2.  Thus, in factored form we have (x - 9)(x + 7) = 0, ans so the roots are {-7, 9}.

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Shanley would like to give $5 gift cards
Serjik [45]

Answer:

$5x + $4y ≤ $120

let x = 10

y = 5

$70  ≤ 120

Step-by-step explanation:

Note that

> means greater than

< means less than

≥  means greater or equal to

≤ means less than or equal to

the total amount Shanley has is $120. She can spend less than this amount or the amount exactly. So, the inequality sign to be used is ≤

$5x + $4y ≤ $120

let x = 10

y = 5

(50) + 20  ≤ 120

$70 ≤  120

4 0
3 years ago
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Elanso [62]
I think it’s a carrot
8 0
3 years ago
Determine the measure of ∠F.Question options:1) 64°2) 52°3) 128°4) 256°
OleMash [197]

ANSWER :

The answer is 1) 64

EXPLANATION :

The measurement of the inscribed angle is half the measurement of the intercepted arc.

From the given figure,

The inscribed angle is Angle F

The intercepted arc is Arc BD

So this will become :

\begin{gathered} \angle F=\frac{1}{2}\text{Arc BD} \\ \angle F=\frac{1}{2}(128) \\ \angle F=64 \end{gathered}

3 0
1 year ago
Blain exchanges $100 for yen before going to Japan. If each U.S. dollar is worth 88.353 yen, how many yen should Blain receive?
Tcecarenko [31]
To figure out how many yen all ya have to do is multiply 88.353 by 100 to get the answer 8835.3 yen.
5 0
3 years ago
Read 2 more answers
Each time they Playa game there's a 90% chance that the blue comets soccer team will score the first goal. What is the probabili
aalyn [17]

Step-by-step explanation:

in 4 straight games ?

game 1 has a probability of 0.9 (= 90%).

for 2 games we have the probability of the first game, and now based on this we have to apply the probability of the second game.

in other words, the desired event has to happen in the first game AND then also in the second game.

since both probabilities are smaller than 1 (0.9), the total probability for 2 games must be less than the probability for 1 isolated game.

to combine such probabilities as "and" events, we have to multiply these probabilities.

so, the probability for 2 games is

0.9 × 0.9 = 0.9² = 0.81

and in the same way we get the probability to score the first goal in 4 games in a row :

0.9⁴ = 0.6561

8 0
2 years ago
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