2 years ago

Hello! could use some help. (answer all questions in one answer comment)

Mathematics

1 answer:

gtnhenbr [62]2 years ago

7 0

Answer:

1. 8

2. 21÷3=7

3. 5x6=30

4. 7

You might be interested in

Danni counted 48 apples in a basket of apples. The basket actually contained 46 apples. What is the percent error?

enot [183]

The answer would be 4.2%

5 0

3 years ago

Need to find a fraction that is greater than 1/8 but less than 1/2.

o-na [289]

Answer:

1/4

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Write as a product:<br> a2+b2–2ab –25

kozerog [31]

Answer: -a2 - 2ab - b2 + 25 =

-1 • (a2 + 2ab + b2 - 25)

Final result :

-a2 - 2ab - b2 + 25

Step-by-step explanation:

3 0

3 years ago

Simplify sin^2y/sec^2 y−1 to a single trigonometric function

liubo4ka [24]

Answer:

$\frac{ { \sin}^{2} y}{ { \sec}^{2}y - 1 } = { \cos }^{2} y$

Step-by-step explanation:

We know that ${ \tan }^{2} y = { \sec }^{2} y - 1$

Also , ${ \tan}^{2} y = \frac{ { \sin }^{2} y}{ { \cos }^{2}y }$

So ,

$\frac{ { \sin }^{2}y }{ { \sec }^{2}y - 1 } = \frac{ { \sin}^{2} y}{ { \tan }^{2} y} = \frac{ { \sin }^{2}y }{ \frac{ { \sin}^{2} y}{ { \cos}^{2}y } } = { \cos }^{2} y$

6 0

2 years ago

Please help me complete 5 and 6

Rina8888 [55]

1. Parenthesis:
(15)8 - 4 + 2 + 1
Multiply:
120 - 4 + 2 + 1
Subtract:
116 + 2 + 1
Add:
119, the answer is A.
2. 8 x 15 = 120
120 / 2 = 60
6 x 15 = 90
90 + 60 = 150
The answer is A.
Hope this helps!

8 0

2 years ago