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notsponge [240]
3 years ago
11

(12 + 3) - 7 = N ineed an aswer pls​

Mathematics
2 answers:
Bad White [126]3 years ago
8 0
How to get the answer

12+3=15
15-7=8

n=8
KIM [24]3 years ago
3 0

Step-by-step explanation:

N=8

that is the answer

I am sure

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Paul is building a bridge for a school project and wants to make a right triangle out of three popsicle sticks that measure 8 cm
STatiana [176]

Answer:

No he can't

Step-by-step explanation:

8² = 64

10² = 100

8² + 10² = 164

18² = 324

For a right triangle A²+B²=C²

4 0
3 years ago
A model ocean liner is 12 inches long. If it is built to a scale of 1 in:300 ft., how long is the real ocean liner?
Amiraneli [1.4K]

Answer:

3600 ft

Step-by-step explanation:

because each inch in the model is 300 feet in real life, you do 12 times 300 ft and you get 3600 ft

7 0
4 years ago
Need help with this ASAP
Mariana [72]

Answer:

Sequence: 13, 20, 27

Rule: Tn = 7n + 6

Step-by-step explanation:

The 3 other numbers that can form an arithmetic progression is 13, 20, 27...

The nth term of an arithmetic progression is expressed as;

Tn = a + (n-1)d

a is the first term = 13

n is the number of terms

d is the common difference = 20 - 13 = 27 - 20

d = 7

Substitute

Tn = 13 + (n-1)(7)

Tn = 13 + 7n - 7

Tn = 7n+13-7

Tn = 7n + 6

This gives the required rule

5 0
3 years ago
Write an equation of a parabola that passes through the point (2,4) with vertex (-1,-1) in vertex form.
quester [9]
An applicable equation of a vertical parabola in vertex form is:

y-k = a(x-h)^2

Let x=2, y=4, h=-1 and k=-1, where (h,k) is the vertex.  Then,

4-(-1) = a(2-[-1])^2, which becomes 5 = a(9).  Therefore, a = 5/9, and the 
equation of the parabola is

y+1 = (5/9)(x+1)
8 0
3 years ago
Pls help 25h²- 16t² factorise it​
noname [10]

Answer:

(5h-4t)(5h+4t)

Step-by-step explanation:

25h² - 16t²

adding  and subtracting 20ht from it        (√25 and √16 = 5x4 = 20):

25h² + 20ht - 20ht -16t²

factor:

(5h-4t)(5h+4t)

8 0
3 years ago
Read 2 more answers
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