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Anna71 [15]
3 years ago
13

How many counting numbers have three distinct nonzero digits such that the sum of the three digits is 7?​

Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0

Answer:

6

Step-by-step explanation:

You have 2 conditions.

1. The digits must be different.

2. The digits must add to 7.

There aren't very many

124

142

214

241

412

421

That's it. That's your answer. There are 6 of them

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I need some help with this question.
zysi [14]

The scale factor will be 1.5. The corresponding angles are congruent because the size is changed not the angles.

<h3>What is dilation?</h3>

Dilation is the process of increasing the size of an item without affecting its form. Depending on the scale factor, the object's size can be raised or lowered.

Adnan wants a larger garden.

He draws the triangle ΔPQR to show his original garden.

He wants to enlarge a garden, so he uses a dilation to form the image of the triangle ΔPQ'R'.

He uses vertex P as the center of the dilation.

The ratio of the corresponding sides will be given as

PQ'/PQ = Q'R'/QR = R'P/RP = 1.5

The scale factor will be 1.5.

The corresponding angles are congruent because the size is changed not the angles.

More about the dilation link is given below.

brainly.com/question/2856466

#SPJ1

7 0
2 years ago
P Is inversely proportional to Q.
cluponka [151]
The proportion is 100:32.
You can put this into a fraction 100/32 and conclude that P is 3.3 repeating times larger than Q.
When Q=80, P will be 3.3 times larger than 80.
The answer is P = 266.6 repeating or 266.67.
6 0
3 years ago
The right triangle on the right is a scaled copy of the right triangle on the left. Identify the scale factor. Express your answ
kondor19780726 [428]

Answer:

One by third

Step-by-step explanation:

According to the figure the right angle triangle that was on left would be 3 times bigger than the right triangle that was on right. So here the dimension of the right triangle is one by third and equivalent to the dimension of the left triangle

the one on the left is 3 times larger than the one on the right. in other words, the right triangle's dimensions times 1/3 is equal to the left triangle's dimensions.

6 0
3 years ago
Which equation matches the graph shown below?
vagabundo [1.1K]
The graph is a parabola with roots at (-4.5, 0) and (0.5, 0) and vertex at (-2, -13)
Equation using roots is a(x + 9/2)(x - 1/2) = a(x^2 + 4x - 9/4) = ax^2 + 4ax - 9/4 a . . . . . . . . (1)
Equation using vertex is a(x + 2)^2 - 13 = a(x^2 + 4x + 4) - 13 = ax^2 + 4ax + 4a - 13 . . . . . . . . (2)
From (1) and (2), -9/4 a = 4a - 13
13 = 4a + 9/4 a = 25/4 a
a = (4 x 13)/25 = 2.08 = 2 approx

Therefore required equation is y = 2x^2 + 4(2)x + 4(2) - 13 = 2x^2 + 8x + 8 - 13 = 2x^2 + 8x - 5
6 0
3 years ago
Solve this problem thanks
vovikov84 [41]

The three missing lengths are the left hypotenuse, x, the middle altitude, y, and the right hypotenuse, z.


9/y = y/16


y^2 = 9 * 16


y^2 = 144


y = 12


9^2 + 12^2 = x^2


x^2 = 225


x = 15


12^2 + 16^2 = z^2


z^2 = 400


z = 20


From left to right, the sides measure 15, 12, and 20 units.

5 0
4 years ago
Read 2 more answers
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