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goldfiish [28.3K]
3 years ago
5

Please help me..!!.....

Mathematics
1 answer:
iragen [17]3 years ago
7 0

Answer:

first one, -4+-5=-9

second one, is d, -6 14/15

Step-by-step explanation:

i hope this helps.    :)

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How to graph 3 ordered pairs
Vesnalui [34]

Answer: I'm assuming you just need to graph each ordered pair without doing anything else to them. The first number in the ordered pair is called the x-intercept, the second number is the y-intercept. To graph an ordered pair you need to count the x-intercept number and go to that number on the x-axis (horizontal), do the same for the y-intercept on the y-axis (vertical) and make a point/dot. Repeat this for the other two ordered pairs.

6 0
3 years ago
Read 2 more answers
The height of the tunnel at the center is 35ft, and the vertical clearance must be 21 ft at a point of 8ft from the center. Find
Zinaida [17]

Answer:

y=-0.215x^2+35

Step by Step:

Let, h=0,  k=35, x=8, y=21

We know that, the general equation of the parabola.

   y-k = a(x-h)^2

\Rightarrow y=a(x-h)^2+k  .........(i)

Substitute the  value of h, k, x, y in equation (i) and find the value of a.

  21=a(8-0)^2+35

\Rightarrow 21=a\times 8^2+35

\Rightarrow 21=64a+35

\Rightarrow 64a=21-35

\Rightarrow 64a=-14

\Rightarrow a=\frac{-14}{65}

\Rightarrow a=-0.215

Hence, the equation of the parabola is:

y=-0.215x^2+35

8 0
3 years ago
Two numbers 60 and n have LCM of 420. If n is a multiple of 6 less than 90,find the possible value of n
Ber [7]
Lcm of 60 and n = 420
Stated: n <90 and a multiple of 6

420/60 = 7 thus n must be a multiple of 7
Therefore n =42 or 84
3 0
3 years ago
PLEASE HELP ASAP!<br><br>Construct an angle of 75° and write the steps of construction.​
vlada-n [284]

Step-by-step explanation:

Steps of Construction

(i) Draw ray AB.

(ii) Construct  ∠BAC = 60°.

(iii) Construct  ∠BAD = 90°.

(iv) Bisect ∠CAD, so that ∠CAE = ∠EAD = 15°.

(v) We obtain  ∠BAE = ∠BAC + ∠CAE = 60° + 15° =75°.

Hope this Helps!!!!

6 0
2 years ago
Solve with steps<br> 5^(x+3)=25^(x-2)
Taya2010 [7]

5^(x+3)=25^(x-2)

Apply the exponent rule ( 5 ^2 = 25, so remove the 5 and replace 25?with 2)


x + 3 = 2(x-2)

Simplify:

X + 3 = 2x -4

Add 4 to both sides:

X + 7 = 2x

Subtract x from both sides

X = 7


Answer: x = 7

6 0
2 years ago
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