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Kryger [21]
3 years ago
13

Please help

Mathematics
2 answers:
sergejj [24]3 years ago
6 0
I found this on an app I used it by completing the square but it didn't show this

pochemuha3 years ago
3 0

Answer:  <em>A) (x + 3)^2 + 6</em>

Step-by-step explanation:

x^2 + 6x + 15

<em>Subtract 15 from both sides of the equation.</em>

x^2 + 6x = -15

<em>Complete the equation and add to both sides. Since (6 = 3 + 3), (3 x 3 = 9)                </em>

x^2 + 6x + 9 = -15 + 9

<em>Simplify</em>

(x + 3)^2 = -6

<em>Add 6 to both sides of the equation</em>

(x + 3)^2 + 6

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On Monday you sent x number of text messages. On Tuesday you sent twice as many. On Wednesday you sent 12 more texts than you se
Lady bird [3.3K]

Answer:

Expression representing number of text messages sent on Tuesday = 2x , where x = text messages sent on Monday

Step-by-step explanation:

Let number of messages sent on Monday = x

So, number if messages sent on Tuesday = 2 times x = 2x

Number of texts sent on Wednesday = 12 more than texts sent on Tuesday = 2x + 12

Number of texts sent on Thursday = Half the texts sent on Wednesday =   1/2 (2x + 12) = x + 6

3 0
3 years ago
Read 2 more answers
4. Determine all unknown sides and angles to 1 decimal place.
Ksju [112]

Answer:

The unknown sides are 60.81cm and 51.57cm while the unknown angle is 58degrees

Step-by-step explanation:

4a) Given the following

Opposite side = 38cm (side facing the given angle)

Required

Adjacent and hypotenuse side

According to SOH CAH TOA

tan \theta = \frac{opp}{hyp}\\tan 32=\frac{38}{hyp}\\hyp=\frac{38}{tan 32}\\hyp=\frac{38}{0.6249}\\hyp=  60.81cm

Next is to get the adjacent

Cos 32=\frac{adj}{60.81}\\adj=60.81cos32\\adj=60.81(0.8480)\\adj= 51.57cm

Next is to get the missing

Since sum of angle in the triangle is 180degrees

32 + 90 + x = 180

122 + x = 180

x = 180 - 122

x = 58degrees

7 0
3 years ago
Use synthetic division to evaluate f(x) = –2x^3+ 3x – 6 when x = -5.
fgiga [73]

Answer:

-131

Step-by-step explanation:

Use -5 in place of x

f(x) = –2x^3+ 3x – 6

f(x) = -2*-5^3+3*5-6

6 0
3 years ago
Will give brainliest
V125BC [204]

Answer:

B

Step-by-step explanation:

Basically, this question is asking the legs of the triangle shown in the graph.

In this right triangle, there are 2 legs and one of them is 6400 meters. We were asked to find out the length of the other led. And we know the angle is 16.5 deg.

Using Tangent  to find out:

set the length of the other leg is x meters.

tan(16.5) = 6400/x

x= 6400/tan(16.5)

x= 21606 m

7 0
2 years ago
Read 2 more answers
PlZ HELP 1 + 1 = ?<br> If you play avakin life, drop ur friendcode:
Harrizon [31]

Answer:

2 and I do not play it.

Step-by-step explanation:

......

3 0
3 years ago
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