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2 years ago

PLEASE HELP WITH THIS ONE QUESTION

Mathematics

1 answer:

Snezhnost [94]2 years ago

8 0

Answer:

The fourth option.

Step-by-step explanation:

In the given equation x^2 + 4x + 9 = 0, a=1, b=4, and c=9. The quadratic formula is in the attachment below so if you plug in a, b, and c you get the fourth option.

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Zoe needs to buy beads to make jewelry. For each earring, Zoe uses 3 small blue beads, 1 small metallic bead, and 2 large green

viva [34]

Zoe will need to buy 48 beads.
3 + 1 + 2 = 6.
6 x 8 = 48.
Hope this helps!!!:)

3 0

2 years ago

What is the measure of x?

MA_775_DIABLO [31]

when running a line, in a right-triangle, from the 90° angle perpendicular to its opposite side, we will end up with three similar triangles, one Small, one Medium and a containing Large one, from where we can use proportions to get their sides, so Check the picture below.

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1 year ago

The length of a social media interaction is normally distributed with a mean of 3 minutes and a standard deviation of .4 minutes

Kazeer [188]

The probability that an interaction lasts longer than 4 minutes is 0.0062.

<h3>What is probability theory?</h3>

probability theory in mathematics focus on the analysis of random phenomena and this theory let us know that the outcome of a random event cannot be determined before it occurs.

z = (4 - 3)/.4

z = 1/.4

z = 2.5

0.0062

Hence The probability that an interaction lasts longer than 4 minutes is 0.0062.

Read more on the probability here:

brainly.com/question/3248965

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3 0

1 year ago

Katie invests $5,000 in an account earning 4% interest, compounded annually for 5 years. Two years after Katie's initial investm

Lyrx [107]

Emily earned $166 more in her account than Katie.

We use the compound interest formula for both of these:

$A=p(1+r)^t$

For Katie's deposit:
$A=5000(1+0.04)^5=5000(1.04)^5 = 6083.26$

This gives Katie 6083.26-5000 = 1083.26 in interest (1083, to the nearest dollar).

For Emily's deposit:
$A=10000(1+0.04)^3=10000(1.04)^3=11248.64$

This means she earned 11248.64-10000=1248.64 in interest (1249, to the nearest dollar).

The difference in interest is given by 1249-1083=166

4 0

3 years ago

Read 2 more answers

Need help with these two questions linear relations.

wel

Answer:

b. y = -7x + 4

1. y = -7(-5)+ 4 = 35+4= 39

2. -24= -7x + 4

-28 = -7x

4 = x

3. y = -7(0)+4= 4

4. 0 = -7x+4

-4= -7x

4/7 = x

c. 3y - 5x = 15

1. 3y - 5(6)

3y-30=15

3y=45

y = 15

2. 3(-10)-5x=15

-30-5x=15

-5x = 45

x = -9

3. 3y-5(0)=15

3y=15

y=5

4. 3(0)-5x=15

0-5x=15

-5x=15

x=-3

Step-by-step explanation:

3 0

3 years ago