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JulijaS [17]
2 years ago
7

Need help please its a quiz

Mathematics
2 answers:
Masja [62]2 years ago
8 0

Answer:

Fourth and fifth ones are right

Step-by-step explanation:

astraxan [27]2 years ago
6 0

Answer:

4 + (-12) and (-2) + (-6)

17 + (-9) and (-9) + 17

(-19) + 19 and 5 + (-5)

Step-by-step explanation:

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Solve for −4.2y+2.1>−2.52
Alchen [17]

Answer:

y < 1.1

Step-by-step explanation:

<u>Step 1:  Subtract 2.1 from both sides </u>

-4.2y + 2.1 - 2.1 > -2.52 - 2.1

<em>-4.2y > -4.62</em>

<em />

<u>Step 2:  Divide both sides by -4.2</u>

-4.2y / -4.2 > -4.62 / -4.2

<u><em>Since you divided by a negative, that flips the sign.</em></u>

<em>y < 1.1 </em>

Answer:  y < 1.1

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3 years ago
Helppp and explain pls and ty
raketka [301]
I’m not positive but last year I got this card and it’s a guide for these types of triangles. Since you’re missing the long leg but you have the short leg you have to do 22 square root 3 in order to find the long leg. That gives you 38.1051177665 so I would say none of the choices

7 0
2 years ago
Integrate sin²2x cos²2x dx
DochEvi [55]
\sin^2x=\dfrac{1-\cos2x}2
\cos^2x=\dfrac{1+\cos2x}2

From the identities above, you have

\sin^22x\cos^22x=\dfrac{(1-\cos4x)(1+\cos4x)}4=\dfrac{1-\cos^24x}4

Applying once more, you have

\dfrac{1-\cos^24x}4=\dfrac{1-\dfrac{1+\cos8x}2}4=\dfrac{1-\cos8x}8

So,

\displaystyle\int\sin^22x\cos^22x\,\mathrm dx=\frac18\int(1-\cos8x)\,\mathrm dx=\frac x8-\frac1{64}\sin8x+C
7 0
2 years ago
Round 14.57 to nearest whole number
Galina-37 [17]
14.57 rounded to the nearest whole number is..... 15
8 0
2 years ago
MATH HELP PLEASE ASAP
Angelina_Jolie [31]
A. There is one solution. The solution is where the lines intersect. Because both are linear and do not have the same slope, they will only cross once.

B. The solution is (3,4) since this is the coordinate at which the two lines intersect.
8 0
2 years ago
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