need help to solve

Answer:

3. 4a(a + 1) - 15

step-by-step explanation:

1. (x +y)² + 11 (x + y) + 30

= x + y {(x +y) + 11} + 30

2. (a - b)² - 16(a - b) + 60

= (a - b){(a - b) - 16} + 60

3. 4a² + 4a - 15) - 15

4. 2x² + 5x + 2

= x(2x + 5) + 2

Answer:

2.5 + 1.32 = 3.82

Answer:

3.82 pounds of ground beef

Step-by-step explanation:

Add the two pounds, 2.5 + 1.32, to get the total number of pounds of ground beef Shawn used.

Answer:

780

Step-by-step explanation:

The required simplified value of the given function at f(6) = 36.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.

here,
Given function
f(x) = 4x + 12

Put x = 6
f(6) = 4(6) + 12
f(6) = 24 + 12
f(6) = 36

Thus, the required simplified value of the given function at f(6) = 36.

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Answer:

Step-by-step explanation:

3.76: 1.09 + 2.67  

11.19: 23.14 - 11.95

98.98: 40.09 + 58.89

90: 42.93 + 47.07

3.48: 86 - 82.52

0.09: 0.78 - 0.69

1.35: 0.56 + 0.79

0.63: 5 - 4.37

12.08: 78.14 - 66.06

79.44: 67.32 + 12.12

Answer:

3.76: 1.09 + 2.67  

11.19: 23.14 - 11.95

98.98: 40.09 + 58.89

90: 42.93 + 47.07

3.48: 86 - 82.52

0.09: 0.78 - 0.69

1.35: 0.56 + 0.79

0.63: 5 - 4.37

12.08: 78.14 - 66.06

79.44: 67.32 + 12.12

.

Answer:

final price:56.56

tax amount:3.39

Answer: 3/2

Step-by-step explanation: it’s just the number with the variable

Answer:

the slpoe is -3/2

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

4.71 +3.80 =8.51

Step-by-step explanation:

Answer:

8.51

Step-by-step explanation:

4.71

+ 3.80

------------

8.51

~Ren

======================================================

Explanation:

Recall that vertex form is

y = a(x-h)^2 + k

where (h,k) is the vertex. We want the vertex to be (-3,0) which means that h = -3 and k = 0 must be the case.

Plug those values in to get

y = a(x-h)^2 + k

y = a(x-(-3))^2 + 0

y = a(x+3)^2

Now we need the value of 'a', which determines two things

To determine 'a', we'll use the other point (-5,-4).

So we'll plug in x = -5 and y = -4 and solve for 'a'

y = a(x+3)^2

-4 = a(-5+3)^2

-4 = a(-2)^2

-4 = a(4)

-4 = 4a

4a = -4

a = -4/4

a = -1

The equation y = a(x+3)^2 updates to y = -1(x+3)^2 which simplifies to the final answer y = -(x+3)^2. The answer is choice D.

---------------

As a check, plugging x = -5 should lead to y = -4

y = -(x+3)^2

y = -(-5+3)^2

y = -(-2)^2

y = -(4)

y = -4

This helps confirm the answer.

I'll let you check to see if (-3,0) is on this graph. Plugging in x = -3 should lead to y = 0.

Answer:

I think it's A and C

Step-by-step explanation:

I could be wrong though

Answer:

c

Step-by-step explanation:

if not sorry

Answer:

585 cars

Step-by-step explanation:

Given

[tex]Floors = 5[/tex]

[tex]Cars = 117[/tex] per floor

Required

Determine the total number of cars

This is calculated by multiplying number of cars per floor by number of floors.

[tex]Total = Floors*Cars[/tex]

[tex]Total = 5 * 117[/tex]

[tex]Total = 585[/tex]

Hence, there are 585 cars in total

Answer:

A because theyare collecting data and because it is written down.

Step-by-step explanation:

A. Asking voters whom they will vote for and D. Weighing wrestlers are examples of data collecting.

Given that,

To determine two activities are examples of data collecting.

Statistic is the study of mathematics that deals with relations between comprehensive data.

Here,
The act of acquiring and analyzing data on certain variables in an established system allows one to analyze results and respond to pertinent inquiries. In all academic disciplines, including the physical and social sciences, the humanities, and business, data collecting is a necessary component of research.
So, asking voters whom they will vote for and  Weighing wrestlers are two examples of data collecting.

Thus, A. Asking voters whom they will vote for and D. Weighing wrestlers are examples of data collecting.

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Answer:

Proved See below

Step-by-step explanation:

Man this one is a world of its own :D Just a quick question are you a fellow Add Math student in O levels i remember this question from back in the day :D Anyhow Lets get started

For this question we need to know the following identities:

[tex]1+tan^{2}x=sec^2x\\\\1+cot^2x=cosec^2x\\\\sin^2x+cos^2x=1[/tex]

Lets solve the bottom most part first:

[tex]1-\frac{1}{1-sec^2x} \\\\[/tex]

Take LCM

[tex]1-\frac{1}{1-sec^2x} \\\\\frac{1-sec^2x-1}{1-sec^2x} \\\\\frac{-sec^2x}{1-sec^2x} \\\\\frac{-(1+tan^2x)}{-tan^2x}[/tex]

now break the LCM

[tex]\frac{-1}{-tan^2x}+\frac{-tan^2x}{-tan^2x}\\\\\frac{1}{tan^2x}+1\\\\cot^2x+1[/tex]

because 1/tan = cot x

and furthermore,

[tex]cot^2x+1\\cosec^2x[/tex]

now we solve the above part and replace the bottom most part that we solved with [tex]cosec^2x[/tex]

[tex]\frac{1}{1-\frac{1}{cosec^2x} } \\\\\frac{1}{1-sin^2x} \\\\\frac{1}{cos^2x}\\\\sec^2x[/tex]

Hence proved! :D

If the opposite sides of a quadrilateral are congruent, then the figure is a parallelogram. ... Parallelogram Diagonals Theorem Converse: If the diagonals of a quadrilateral bisect each other, then the figure is a parallelogram.

Answer: 0.15, 3/20

0.8, 4/5

0.02, 1/50

Those are answers unless you didn’t include the actual question in your picture

Step-by-step explanation:

Answer:

3 + 4 > 9

Step-by-step explanation:

Now, when we have 3 sides of a triangle, the sum of the length of any two sides must be greater than the third side

Thus, we have that;

3 + 4 > 9

This is because the above is impossible

Others are quite possible mathematical expressions

Answer:

The blob will grow 215 kg in 2 weeks.

Step-by-step explanation:

As an alien blob started with a mass of 19 kg and is doubling in size every day.

Thus, we can use the equation

where x is the number of days and y is the mass size of the alien blob

as

so plugin x = 14 to determine the size of the blob after two weeks

Thus,

y = x² + 19

y = (14)² + 19

y = 215 kg

Thus, the blob will grow 215 kg in 2 weeks.

Answer:

4/-13

Step-by-step explanation:

The formula for slope is y2-y1 over x2-x1.

Answer:

Amount needed by her [tex]=\$(5x+5)[/tex]

Step-by-step explanation:

Given: Susie wants to buy 5 slices of pizza and a litre of soda that cost $5 for her and her friends

To find: amount needed by her

Solution:

Let cost of 1 slice of pizza be [tex]\$x[/tex]. Also, a litre of soda costs $5.

Cost of 5 slices of pizza [tex]=\$5x[/tex]

Cost of a litre of soda [tex]=\$5[/tex]

Total amount needed by her [tex]=\$(5x+5)[/tex]

Answer:

Saturday.

Step-by-step explanation:

The data point corresponding to the number of text messages sent on Saturday has the highest value. Hence, it has the most text messages sent.

Hope this helped!

Answer:

Ye its saturday

Step-by-step explanation:

Answer:

5/2

Step-by-step

Formula for slope is y2-y1/x2-x1

so it would be 13-3/5-1

which results to 10/4

simplify 5/2

The required slope for the line is m = 5/2.

Two pairs of coordinates are given the slope of the line that passes through points to determine.

The slope of the line is the tangent angle made by the line with horizontal. i.e. m =tanx where x in degrees.

The slope of a line (m) =[tex]y_2-y_1/x_2-x_1[/tex]
   [tex](x_1, y_1), (x_2,y_2) = (1,3),(5,13)[/tex]
m = 13-3/5-1
m = 10/4
m =5/2

Thus, the required slope for the line is m = 5/2.

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( 8 + 13 )

if you add them all together then divide thats u answer !

Answer:

B

Step-by-step explanation:

Answer:

Thanks

Step-by-step explanation: