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3 years ago

PLEASE HELP! ! ! PLEASEEE!!

Mathematics

2 answers:

Molodets [167]3 years ago

4 0

Answer:

4^2

Step-by-step explanation:

4^4 times 4^3 is equal to 4^7 since you just add the exponents. Then, when dividing, you subtract the exponents, so 4^7/4^5 is 4^2. I hope this is helpful!

jasenka [17]3 years ago

4 0

Answer:

the answer is

Step-by-step explanation:

4 to the power of 2

you add 4 and 3 which is 7

and 7 subtract 5 which is

4 to the power of 2

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4/9+3/10= what's the answer please

Marta_Voda [28]

Answer:

67/90

Step-by-step explanation:

no explanation

3 0

3 years ago

Read 2 more answers

If 2x² – 2y = 125 and x - y = 2.5, find the value of x + y

uysha [10]

We can solve this using substitution.

because x-y=2.5

x=y+2.5

Now substitute x into other equation.

2(y+2.5)^2-2y=125

2y^2+10y+12.5-2y=125

2y^2+8y-112.5=0

Now comes the ugly part

y=-4+-sqrt(16+900)

y=-4+-sqrt916

y=-4+-2sqrt229

x=-1.5+-2sqrt229

6 0

2 years ago

Han and Leila live 7 miles apart. They decide to start walking toward each other's houses at

AfilCa [17]

2.5 + 3 = 5.5 total speed

7miles / 5.5 mph = 1.27 hours

7 0

2 years ago

Read 2 more answers

NEED HELP! ASAP! 50 POINTS!

Lerok [7]

Answer:

$y=13\text{ miles per gallon}$

Step-by-step explanation:

We have the two points: (0, 11) and (3, 50).

And we want to find the rate of change in y relative to x, where x is the gallons and y is the miles.

In simple terms, we want to find the slope between the two points.

So, let's use the slope formula:

$m=\frac{y_2-y_1}{x_2-x_1}$

Let (0, 11) be (x₁, y₁) and let (3, 50) be (x₂, y₂). Substitute. Let's also put "miles" in the numerator with the Ys and "gallons" in the denominator with the Xs. This yields:

$y=\frac{50-11\text{ miles}}{3-0\text{ gallons}}$