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3 years ago

9

jin has a granddaughter named Wei. jin's age is 2 more than 7 Times Wei’s age, in years. Jin’s age is 86 years old. Write and so

lve an equation to find w, Wei’s age in years.

1 answer:

Nonamiya [84]3 years ago

4 0

14 years old because You have to MoBu +7×2

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Can someone please tell me why I got this wrong?

kvasek [131]

We have
f(x)=<span>−x</span>²<span>+ 5x + 6
g(x)=</span><span>3x − 2

we know that
f(x)=g(x)
the solution is the intersection both graphs

using a graph tool
see the attached figure

the solution are the points
(4,10)
and
(-2,-8)

</span>

8 0

3 years ago

A 6-ft ladder is placed against a wall with its base 2 ft from the wall. How high above the ground is the top of the ladder

Zarrin [17]

Use pythagorean theorem - a^2+ b^2 = c^2
a = 2ft, b = ?, c = 6ft
2 x 2 + b^2 = 6 x 6
4 + b^2 = 36
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b = square root of 32
= 5.66ft

4 0

3 years ago

SSSSS [86.1K]

Answer:

There are 15 integers between 2020 and 2400 which have four distinct digits arranged in increasing order.

Step-by-step explanation:

This can be obtained by after a simple counting of number from 2020 and 2400 as follows:

The first set of integers are:

2345, 2346, 2347, 2348, and 2349.

Therefore, there are 6 integers in first set.

The second set of integers are:

2356, 2357, 2358, and 2359.

Therefore, there are 4 integers in second set.

The third set of integers are:

2367, 2368, and 2369.

Therefore, there are 3 integers in third set.

The fourth set of integers are:

2378, and 2379.

Therefore, there are 2 integers in fourth set.

The fifth and the last set of integer is:

2389

Therefore, there is only 1 integers in fifth set.

Adding all the integers from each of the set above, we have:

Total number of integers = 6 + 4 + 3 + 2 + 1 = 15

Therefore, there are 15 integers between 2020 and 2400 which have four distinct digits arranged in increasing order.

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3 years ago

What is -6+2(-2+8v-6v (what are the steps to it too?)

MAXImum [283]

-6-4+16v-12v
It is 4v-10

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3 years ago

Which expression is the simplest form of - (4x + ) +2 (2’ – 3x_)?

Vika [28.1K]

The answer is c I hope it helps

5 0

3 years ago