Please help me with this homework

Mathematics

1 answer:

algol133 years ago

4 0

Yes, you got it right

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Two thirds a number plus 4 is 7

tresset_1 [31]

The number is 4.5 because 2 thirds of 4.5 is 3 and 3 plus 4 is 7.

6 0

3 years ago

2(x + 7) + 3x = 12 The first step in solving this equation for x uses the ___ Property

Elena L [17]

Distributive property to become (2x+14)+3x=12

3 0

3 years ago

Read 2 more answers

Find the value of c that completes the square for x2−15x+c

meriva

Answer:

The value of c is $\frac{225}{4}$ .

Step-by-step explanation:

The perfect square of the difference between two numbers is:

$(x-y)^{2}=x^{2}-2xy+y^{2}$

The expression provided is:

$x^{2}-15x+c$

The expression is a perfect square of the difference between two numbers.

One of the number is x and the other is √c.

Use the above relation to compute the value of c as follows:

$x^{2}-15x+c=(x-\sqrt{c})^{2}\\\\x^{2}-15x+c=x^{2}-2\cdot x\cdot\sqrt{c}+c\\\\15x=2\cdot x\cdot\sqrt{c}\\\\15=2\cdot\sqrt{c}\\\\\sqrt{c}=\frac{15}{2}\\\\c=[\frac{15}{2}]^{2}\\\\c=\frac{225}{4}$

Thus, the value of c is $\frac{225}{4}$ .

5 0

3 years ago

7/10 of 120 and show work pls

slavikrds [6]

When it says 7/10, it actually means 70%, so you have to find 70% of 120.

70 % of 120
= 70% x 120
= (70/100) x 120
= (8400/100)
= 84

Answer: 84

8 0

3 years ago

write an equation in standard form for the line that has an undefined slope and passes through (-6,4)

Verdich [7]

Undefined slope is rise/0
run is equal to 0
that means it doesn't go left or right
means it is vertcal
means it is x=somethig

(x,y)
(-6,4)
x=-6 is the equation

oh, forgot about standard form

standard form is
ax+by=c

so

x+0y=-6 would be the equation in standard form

6 0

3 years ago