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pickupchik [31]
2 years ago
15

Please answer I will mark branlest if you are right and I won't you all to be safe

Mathematics
1 answer:
erastova [34]2 years ago
3 0

Answer:

3. x=21

4. x=28

5. x=35

Step-by-step explanation:

I did ths step by step on my whiteboard and I know my answers are right. Sorry if that sounds cocky.

Can I get brainliest?

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The width of a rectangular window is 24 inches. the area is 624 square inches. What is the length?
Feliz [49]

Answer:

Using the formula

A=wl

Solving forl

l=A

w=624

24=26in

8 0
2 years ago
Read 2 more answers
•** Plss help me **•
VashaNatasha [74]

Answer:

30

Step-by-step explanation:

You can use the triangle area theorem-

15x4(/2)=30

4 0
1 year ago
Find an exact value. Cos 75° negative square root of six plus square root of two quantity square root of six minus square root o
ehidna [41]

Answer:

√2(√3 - 1)/4

Step-by-step explanation:

To find an exact value for Cos75°, we use the compound angle formula. Since 75° = 45° + 30°, Cos75° = Cos(45° + 30°).

Using Cos(A + B) = CosACosB - SinASinB where A = 45° and B = 30°,  

Cos75° = Cos(45° + 30°) = Cos45°Cos30° - Sin45°Sin30°

Now Cos45° = Sin45° = 1/√2 = √2/2, Cos30° = √3/2 and Sin30° = 1/2.

Substituting these values into the above equation, we have

Cos75° = Cos(45° + 30°)

= Cos45°Cos30° - Sin45°Sin30°

= √2/2 × √3/2 -  √2/2 × 1/2

= √6/4 -√2/4

= √2(√3 - 1)/4

6 0
3 years ago
Which of the following is NOT a unit fraction? 7/11 1/16 1/50 1/2
GalinKa [24]

Answer:

7/11

Step-by-step explanation:

This is the only fraction without a 1 in its numerator.

3 0
2 years ago
A camera has a listed price of $53.98 before tax. If the sales tax rate is 6.75% , find the total cost of the camera with sales
nikdorinn [45]

Answer:

$57.62

Step-by-step explanation:

$53.98 x 6.75% = $3.64

$53.98 + $3.64 = $57.62

6 0
3 years ago
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