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2 years ago

Can u help me with these please!

Mathematics

1 answer:

dimaraw [331]2 years ago

8 0

Answer: question one on the sheet AB + 2(CD) =16 and 2(AB)-CD=8 question 3 CD and JK have the same length question 4 EF and AD have the same length question 5 GH is different from all the lengths

question 6 its (3,4) (-1,-3) (4,-1) question 7 (-3,-1) (4,-4) (0,4) srry if im wrong on most of them

Step-by-step explanation: bc im confident

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Log 16 1 = x solve for x

Helga [31]

Answer:

x = Log(16)

Simplify both sides of the expression by isolating the variable.

8 0

1 year ago

How much longer, to the nearest minute, would it take to travel 290 miles at 60mph versus 70 mph.

velikii [3]

So using the equation distance = velocity * time
we get distance/velocity = time
60 MPH: 290/60 = 4.83333 Hours
60 MPH: 290/70 = 4.1429 Hours

Difference between them:
4.8333 - 4.1429 = 0.69 Hours, then multiply that by 60 and you get
41 Minutes.

Hope this helped!
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3 0

3 years ago

Read 2 more answers

The length of the race on sunday was 2 km. what is the length of 4 of those same races in meters?

muminat

1km=1000 meters so 2km=2000, and if you have 4 of the races you multiply 4 by 2000 which gives you 8000 meters
4*2000=8000

6 0

3 years ago

Read 2 more answers

When do we use the addition and subtraction formulas for sine or cosine?

777dan777 [17]

When we need the cosine of the sum of two angles, we use the addition formula for cosine.

When we need the sine of the difference of two angles, we use the difference formula for sine.

Let's try one. Say we needed to know

$\cos 15^\circ
$

We're only expected to know the trig functions of 30/60/90 and 45/45/90 triangles. Fortunately, $15^\circ = 45^\circ - 30^\circ$ so

$\cos 15^\circ = \cos( 45^\circ - 30^\circ )$

$= \cos( 45^\circ) \cos(30^\circ ) + \sin(45^\circ) \sin(30^\circ)$

$= \dfrac{\sqrt{2}}{2} \cdot \dfrac{ \sqrt{3}}{2} + \dfrac{\sqrt{2}}{2} \cdot \dfrac{1}{2}$

$\cos 15^\circ = \frac{1}{4} (\sqrt{6} + \sqrt{2})$

4 0

3 years ago

What are the solutions to this equation?<br> 7x2 − 28 = 0

valentina_108 [34]

Answer:

x = 2 or x = -2

Step-by-step explanation:

7x^2 - 28 = 0

7x^2 = 28

x^2 = 28/7 = 4

x = root(4) or x = -root(4)

x = 2 or x = -2

8 0

2 years ago