3 years ago

What unknown number makes 7 x 8 true please answer it in 5 minutes

Mathematics

1 answer:

katen-ka-za [31]3 years ago

4 0

The answer would be 56

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A(x, 1), B(5,3) and C(4,-3) are the vertices of triangle ABC. If AB=AC, find the value of x

Molodets [167]

$\\ \rm\longmapsto AB=AC$

$\\ \rm\longmapsto \sqrt{(x-5)^2+(1-5)^2}=\sqrt{(x-4)^2+(1+3)^2}$

$\\ \rm\longmapsto (x-5)^2+(-2)^2=(x-4)^2+4^2$

$\\ \rm\longmapsto (x-5)^2+4=(x-4)^2+16$

$\\ \rm\longmapsto (x-5)^2-(x-4)^2=16-4=12$

$\\ \rm\longmapsto x^2-10x+25-x^2+8x-16=12$

$\\ \rm\longmapsto -2x+9=12$

$\\ \rm\longmapsto -2x=12-9=3$

$\\ \rm\longmapsto x=\dfrac{3}{-2}=-1.5$

5 0

3 years ago

Read 2 more answers

How do I solve this problem ?

Nonamiya [84]

Answer:

$19.99 for each cartridge.

Step-by-step explanation:

For this problem, we are finding the cost of the three printer cartridges. Since the problem says that the tax was 5.95, we can subtract that from 90.91.

90.91-5.95=

84.96

Next, since we know that the software package was 24.99, we can subtract that from 84.96.

84.96-24.99=

59.97

Finally, since there are three printer cartridges, we can divide 59.97 by 3, and get our answer.

59.97/3=

19.99

Each printer cartridge would cost $19.99.

Hope this helps and have a good day! :D

8 0

1 year ago

What does rate of change mean

jeka94

Answer:

A rate of change is a rate that describes how one quantity changes in relation to another quantity.

8 0

3 years ago

Jeannie discovered that the ratio of kilometers to miles is 1 to 0.6. When her family was driving in Canada, she saw a sign that

Assoli18 [71]

Simply multiply 80 by .6

80 x .6 = 48 miles

8 0

3 years ago

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ali sorced 66 and 72 marks respectively. for his two tests what is the lowest marks he must have sorced for his third test if an

dimaraw [331]

Answer:

Step-by-step explanation:

66 + 72 + 87 = 225

225 / 3 = 75

6 0

2 years ago