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4 years ago

2. What is the best first step in solving the equation below? * 15

Mathematics

1 answer:

prohojiy [21]4 years ago

7 0

Answer:

subtract 5 from both sides of the equaton

Step-by-step explanation:

(2x - 3)^2 + 5 = 20

(2x-3)^2 =25

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P is a point on the x axis 13 units from the point (-3, 5). find all the possible coordinates for p.

SVEN [57.7K]

If P is a point in the x axis therefore this means that the y must be zero. Hence the coordinate of p is (x, 0).

We can use the distance formula to solve for the value of x:

d^2 = (x – x1)^2 + (y – y1)^2

13^2 = (x + 3)^2 + (0 – 5)^2

169 = (x + 3)^2 + 25

(x + 3)^2 = 144

x + 3 = ± 12

x = -15, 9

Hence P has two possible coordinates:

8 0

3 years ago

leila saw that the dress was marked down 30 percent during a sale. if the original price was $130 what was the sale price of the

pychu [463]

Answer:

The sale price of the dress is $91

Step-by-step explanation:

leila saw that the dress was marked down 30% during a sale. If the original price was $130.

Which means,

130 × 30 ÷ 100 = $39

So,

$130 – $39 = $91

Thus, The sale price of the dress is $91

<u>-TheUnknownScientist 72</u>

6 0

3 years ago

Read 2 more answers

The table below represents an exponential function. what is the missing value?

Blababa [14]

Answer:

The missing value is 128

Step-by-step explanation:

we know that

The equation of the exponential function is of the form

$f(x)=a(b^{x})$

where

a is the initial value (value of the function when the value of x is equal to zero)

b is the base

r is the rate

b=(1+r)

In this problem , looking at the table, we have that the number of bacteria is doubled every second

$r=100\%=100/100=1\\b=1+r=1+1=2\\a=8$

substitute in the formula

$f(x)=8(2^{x})$

where

f(x) is the number of bacteria

x is the time in seconds

For x=4 sec

substitute

$f(4)=8(2^{4})$

$f(4)=128\ bacteria$

4 0

3 years ago

Based on the information above, which statement is true?

Dimas [21]

Answer:

BC = 1/2DE

Step-by-step explanation:

8 0

3 years ago

I need help with both

NikAS [45]

1) 3 cm.
5cm*8cm*3cm= 120cm^2
2) Rectangle

4 0

3 years ago