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2 years ago

PLEASE HELP ASAP!! Please its due in 5 min!

Mathematics

1 answer:

-Dominant- [34]2 years ago

5 0

Answer:

first question) m = - 63
second question) y = 4

sorry if this is late, hope this helped!

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HELP TIMED BRAINLIST QUICK

lorasvet [3.4K]

Answer:

12 x^9 + 15 x^8 - 8 x^6 - 10 x^5 = A.) is the answer

Step-by-step explanation:

Expand the following:

x^4 (3 x^3 - 2) (4 x^2 + 5 x)

Hint: | Multiply 3 x^3 - 2 and 4 x^2 + 5 x together using FOIL.

(3 x^3 - 2) (4 x^2 + 5 x) = (3 x^3) (4 x^2) + (3 x^3) (5 x) + (-2) (4 x^2) + (-2) (5 x) = 12 x^5 + 15 x^4 - 8 x^2 - 10 x = 12 x^5 + 15 x^4 - 8 x^2 - 10 x:

x^4 12 x^5 + 15 x^4 - 8 x^2 - 10 x

Hint: | Distribute x^4 over 12 x^5 + 15 x^4 - 8 x^2 - 10 x.

x^4 (12 x^5 + 15 x^4 - 8 x^2 - 10 x) = x^4 (12 x^5) + x^4 (15 x^4) + x^4 (-8 x^2) + x^4 (-10 x):

12 x^4 x^5 + 15 x^4 x^4 - 8 x^4 x^2 - 10 x^4 x

Hint: | Combine products of like terms.

x^4 (-10) x = x^(4 + 1) (-10):

12 x^4 x^5 + 15 x^4 x^4 - 8 x^4 x^2 + -10 x^5

Hint: | Evaluate 4 + 1.

4 + 1 = 5:

12 x^4 x^5 + 15 x^4 x^4 - 8 x^4 x^2 - 10 x^5

Hint: | Combine products of like terms.

x^4 (-8) x^2 = x^(4 + 2) (-8):

12 x^4 x^5 + 15 x^4 x^4 + -8 x^6 - 10 x^5

Hint: | Evaluate 4 + 2.

4 + 2 = 6:

12 x^4 x^5 + 15 x^4 x^4 - 8 x^6 - 10 x^5

Hint: | Combine products of like terms.

x^4×15 x^4 = 15 x^8:

12 x^4 x^5 + 15 x^8 - 8 x^6 - 10 x^5

Hint: | Combine products of like terms.

x^4×12 x^5 = x^(4 + 5)×12:

12 x^9 + 15 x^8 - 8 x^6 - 10 x^5

Hint: | Evaluate 4 + 5.

4 + 5 = 9:

Answer: 12 x^9 + 15 x^8 - 8 x^6 - 10 x^5

7 0

3 years ago

Read 2 more answers

I came up the answer as 57. I will attach my note, can you check?

ololo11 [35]

BC=19

Explanation

Step 1

ABE

triangle ABE is rigth triangle, then let

$\begin{gathered} Angle=60 \\ adjacentside=BE \\ opposit\text{ side(the one in front of the angle)= AB=}\frac{19\sqrt[]{6}}{4} \end{gathered}$

so, we need a function that relates, angle, adjancent side and opposite side

$\tan \theta=\frac{opposite\text{ side}}{\text{adjacent side}}$

replace

$\begin{gathered} \tan \theta=\frac{opposite\text{ side}}{\text{adjacent side}} \\ \tan 60=\frac{AB}{\text{BE}} \\ \text{cross multiply} \\ \text{BE}\cdot\tan \text{ 60=AB} \\ \text{divide both sides by tan 60} \\ \frac{\text{BE}\cdot\tan\text{ 60}}{\tan\text{ 60}}=\frac{\text{AB}}{\tan\text{ 60}} \\ BE=\frac{\text{AB}}{\tan\text{ 60}} \\ \text{if AB=}\frac{19\sqrt[]{6}}{4} \\ BE=\frac{\frac{19\sqrt[]{6}}{4}}{\sqrt[]{3}} \\ BE=\frac{19\sqrt[]{6}}{4\sqrt[]{3}} \end{gathered}$

Step 2

BED

again, we have a rigth triangle,then let

$\begin{gathered} \text{Hypotenuse}=BD \\ \text{adjacent side= BE=6.71} \\ \text{angle}=\text{ 45} \end{gathered}$

so, we need a function that relates; angle, hypotenuse and adjacent side

$\cos \theta=\frac{adjacent\text{ side}}{\text{hypotenuse}}$

replace.

$\begin{gathered} \cos \theta=\frac{adjacent\text{ side}}{\text{hypotenuse}} \\ \cos 45=\frac{6.71}{\text{BD}} \\ BD=\frac{6.71}{\cos \text{ 45}} \\ BD=\frac{\frac{19\sqrt[]{6}}{4\sqrt[]{3}}}{\frac{\sqrt[]{2}}{2}} \\ BD=\frac{38\sqrt[]{6}}{4\sqrt[]{6}} \\ BD=\frac{38}{4} \end{gathered}$

Step 3

finally BDE

let

angle=30

opposite side= BD

use sin function

$\begin{gathered} \sin \theta=\frac{opposite\text{ side}}{\text{hypotenuse}} \\ \text{replace} \\ \sin \text{ 30=}\frac{BD}{BC} \\ BC\cdot\sin 30=BD \\ BC=\frac{BD}{\sin \text{ 30}} \\ BC=\frac{\frac{38}{4}}{\frac{1}{2}} \\ BC=\frac{76}{4}=19 \\ BC=19 \end{gathered}$

so, the answer is 19

I hop

4 0

1 year ago

Tisha saves $37 in September. She saved 34 in October and 24$ in November. Then Tisha spent 63$ on a a video game. How much mone

FinnZ [79.3K]

Tisha has $32 left out of $95

3 0

3 years ago

What is the answer for 3÷4-1

umka2103 [35]

Answer:

-1/4 OR -0.25

Step-by-step explanation:

Using PEMDAS:

3/4 = 3/4... or 0.75.

Subtracting 1: 3/4 - 4/4 (or 1) = -1/4. 0.75 - 1 = -0.25.

5 0

3 years ago

Read 2 more answers

Joey and his family are taking a road trip. On Monday they travel 68 miles. On Tuesday , they travel 25 miles. On Wednesday they

Stolb23 [73]

Answer:

42 miles

Step-by-step explanation:

so average is found by taking the sum of numbers of all the numbers given, and dividing by the number of numbers

68+25+33= 126

126/3=42

they drove an avg of 42 miles

hope this helps

6 0

3 years ago