this is a self evaluation thing because j want to get better at math​

Answer:..

Step-by-step explanation:

Answer:

Step-by-step explanation:

okay, 26.4*2.7 = 26*3 (when estimated)

26*3=78(or just somewhere around 70)

Answer:

2 dollars for kids

5 dollars for adults

Step-by-step explanation:

We will let x= children

y= adult

we know that

33x+42y=276

46x+40y=292

There are a lot of ways you can solve this but I think it's easiest if we use (what I think is called elimination)

we will start by mulitiplying the second equation by 1.05 to get

48.3x+42y= 306.6

We will subtract the first equation from the second to get

15.3x= 30.6

Solve for x and get 2

Now that we know what x equals we can plug that into any equation and solve for y

we have

33(2)+42y=276

y=5

Answer:

The answer is 72 because 45% of 160 is 72.

Step-by-step explanation:

Answer:

76

Step-by-step explanation:

180-24=156

156÷3=52

52+24=76

Answer:

the answer should be 7 !

Step-by-step explanation:

Answer: 1.4/0.2= 7

Step-by-step explanation:

think of it this way

14 divided by 2 equals 7

1 and 4 tenths divided by 2 tenths equal 7

Answer:

m=2, b=2

y=2x+2

The slope is positive, and the equation is proportional.

Answer:

m = 2 b = -1

equation:  y = 2x -1

Proportional and a positive slope

Answer:

It’s 729

Step-by-step explanation:

Answer:

0.76

Step-by-step explanation:

3+(55-111)/25

=3+(-56)/25

=3+ (-2.24)

=0.76

Answer:

3+(55-111)/25= 0.76

Step-by-step explanation:

Using PEMDAS, you solve 55-111 which is -56

Then you divide -56 by 25 because it is the fourth step, you get -2.24

Add three to -2.24 to get 0.76

If you round UP to the nearest tenth, it will be 0.80

If you round DOWN to the nearest tenth, it will be 0.70

Answer:

B

Step-by-step explanation:

So far, we know that:

∠D = ∠J.

And that:

DE:JK = 14:7 = 2:1

So, to prove that ΔDEF ~ ΔJKL by SAS, DF must be similar to JL, as those are the sides between the angle.  

So:

DF:JL = 2:1.

Our answer is B.

54 216

First look at the difference of the items sold between the 2 people. Clearly Lizzie sold 9 more boxes of peaches and earned 162 more dollars. We can solve and get that each box of peaches are worth 18 dollars. Then use what we found out --> 4 boxes of apples+1 boxes of peaches = 54 dollars. so 4 boxes of apples are worth 54-18=36 dollars. and thus each box of apples are worth 9 dollars.

Answer: each box of apples are wroth 9 dollars and each box of peaches are wroth 18 dollars. Done!

Answer:

Step-by-step explanation:

Parallel lines divide the transversals proportionally.

Correct choice is A only, the other options concern the parallel lines themselves:

Answer:

f+2

Step-by-step explanation:

Wrong, the answer is 1 on Edge..

3/5 *4/3

1/5*4/1=4/5

=.8

hope it helps

Answer:

The answer is "[tex]\bold{\frac{ \ e^{9x}}{9} (x-1)+C}\\[/tex]"

Step-by-step explanation:

Taking the integral [tex]\int x^{2x} \ dx[/tex]  

Evaluating the integral by using integration:

[tex]u=x\\\\dv=e^{9x} \ dx[/tex]

Let

[tex]u=x\\\\ dv=e^{9x} dx[/tex]

Then,

[tex]\to \frac{du}{dx}= 1 \ and\ v =\int e^{9X} \ dx \\\\\to du = 1 \ dx \\\\\to v = \frac{e^{9x}}{9}\\\\\text{integrate the above value}:\\\\\int\ u \ dv = uv - \int v du \\\\Now, \\\\\to \int x e^{9X} \ dx = x \frac{e^{9x}}{9} - \int \frac{e^{9x}}{9} dx[/tex]

                     [tex]= \frac{ x \ e^{9x}}{9} - \frac{e^{9x}}{9}\\\\= \frac{ \ e^{9x}}{9} (x-1)+C\\[/tex]

Answer:

[tex]\displaystyle \int {xe^{9x}} \, dx = e^{9x} \bigg( \frac{x}{9} - \frac{1}{81} \bigg) + C[/tex]

General Formulas and Concepts:

Calculus

Differentiation

Derivative Property [Multiplied Constant]:                                                           [tex]\displaystyle \frac{d}{dx} [cf(x)] = c \cdot f'(x)[/tex]

Basic Power Rule:

Integration

Integration Property [Multiplied Constant]:                                                         [tex]\displaystyle \int {cf(x)} \, dx = c \int {f(x)} \, dx[/tex]

U-Substitution

Integration by Parts:                                                                                               [tex]\displaystyle \int {u} \, dv = uv - \int {v} \, du[/tex]

Step-by-step explanation:

Step 1: Define

Identify

[tex]\displaystyle \int {xe^{9x}} \, dx[/tex]

Step 2: Integrate Pt. 1

Identify variables for integration by parts using LIPET.

Step 3: Integrate Pt. 2

Step 4: Integrate Pt. 3

Identify variables for u-substitution.

Step 5: Integrate Pt. 4

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Integration

Answer:

the answer is 6 1/4%. I hope it helps!

Answer:

12.3

Step-by-step explanation:

Answer:

no because for right angle triangle the sum of the sq of the two smallest side is equal to the sq of biggest side

Answer:

4

Step-by-step explanation:

We need to rewrite this in slope-intercept for which is

y=mx+b

So switch 4x and -5

y=4x-5

m is slope and b is y-intercept we need to find the slope so we look what is beside x which is 4 so the slope is 4

Hope this helps!

Answer:

d there is no such as 5+y cannot be less than 5-y

sana makatulong :-) :-)

Answer:

(x-6)(x-6) or (x-6)^2

Step-by-step explanation:

Answer:

1000000 = 10⁶

Step-by-step explanation:

There are 6 zeroes in 1000000, so to convert it to its standard form we must take 6 as the exponent = 10⁶

Answer:

y=-8x-4

Step-by-step explanation: