Ask question

Ask question

All categories

igor_vitrenko [27]

2 years ago

11

Charlie is saving for a new computer desk. The table costs $70. So far, she has already saved $35/ Write an equation to show how

much more does she need to save to buy the desk. *Let x represent the amount of money that needs to be saved

1 answer:

GalinKa [24]2 years ago

7 0

Answer:

x + 35 = 70

-35 -35

–––––––––––

x = 35

Step-by-step explanation:

35 + 35 = 70

:))

You might be interested in

two times a number plus three times a number equals 13. The sum of two numbers is 7. what are the numbers? write the numbers for

wel

Answer:

4

Step-by-step explanation:

$2+ 3 = 5 \\13-5= 8\\8 divided by 2=4 \\x=4$

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

Which equations have no real solution but have two complex solutions?

konstantin123 [22]

Answer:

B² - 4AC < 0

Step-by-step explanation:

Check for:

B² - 4AC

The equations for which

B² - 4AC < 0

have complex roots

For A, B and C, use this form of the quadratic:

Ax² + Bx + C = 0

5 0

3 years ago

Factorise 49x^2-121 what’s the answer

asambeis [7]

Answer:

( 7x + 11 )( 7x- 11 )

Step-by-step explanation:

( 7x + 11 )( 7x- 11 )

Because 7*7 is 49

-11*11= -121

7*11=77

-7*11= -77

77-77=0

so the answer is 49x^2-121

8 0

3 years ago

Read 2 more answers

The area of a square notepad is 100 square centimeters. How long is each side?<br><br>

iragen [17]

Answer:

Each side is 25 square centimeters

Step-by-step explanation:

100 divided by 4 is 25

5 0

2 years ago