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sashaice [31]
3 years ago
11

What is true about Marcus's work? Check all that

Mathematics
2 answers:
MrRissso [65]3 years ago
4 0

Answer: the 1,3,4

Step-by-step explanation:

Arada [10]3 years ago
4 0

Answer:

Options 1, 3, and 4

1.) Marcus should have substituted –10 for b, not 10.

3.)Marcus should have subtracted 4(1)(25) in the square root.

4.)This equation, when solved correctly, only has 1 real number solution.

Step-by-step explanation:

Just did it on Edgenuity :)

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£2300 is invested for 4 years at 5%
Sphinxa [80]

Answer:

£460

Step-by-step explanation:

Simple interest =PRT/100

Where P = principal

R= rate

T = Time

Given

P= £2300

T= 4yrs

R = 5%

Interest = 2300 x 5 x 4/100

Interest = 46000/100

Interest = £460

8 0
3 years ago
Function 2
balandron [24]

Answer:

Function 2 has larger max value.

Step-by-step explanation:

We know that the graph of Function 1 has the maximum value of 1 at x = 4 by looking at the graph.

But since we don't know what the maximum value of Function 2 is (Because Function 2 isn't given as a graph but rather an equation.) which means that we have to find the maximum value of Function 2.

\large{f(x) =  -  {x}^{2}  + 4x + 1}

It is not necessary to find x-value for a function because we want to know which function has larger maximum value. We will be using the formula below.

\large \boxed{y =  \frac{4ac -  {b}^{2} }{4a} }

As you may know, a max-min value is indeed y-value. From Function 2, we know the value of a, b and c from standard form y = ax²+bx+c

Substitute our a, b and c in the formula.

\large{y =  \frac{4( - 1)(1) -  {(4)}^{2} }{4( - 1)} } \\ \large{y =  \frac{ - 4 - 16}{ - 4} } \\ \large{y =  \frac{ - 20}{ - 4}  = 5}

Since our maximum value or y-value is 5 for Function 2. Since we also know that Function 1 has 1 as maximum value and Function 2 has 5 as maximum value. Therefore, Function 2 has larger maximum value.

5 0
3 years ago
The zoom feature on a copier sets the percent size of a copy. Carol wants to make a 150% copy of a photograph. The original phot
Vsevolod [243]

150% = 1.5

multiply 8 by 1.5

8 * 1.5 = 12

 so the answer is B

3 0
3 years ago
Read 2 more answers
Two angles are supplementary. One angle measures 26o more than the other. Find the measure of the two angles.
nikitadnepr [17]
Supplementary angles are angles whose sum is equal to 180°.

Let one angle be x
The other angle is said to be 26°more than the other so it is x + 26

x + (x+26) = 180
x + x + 26 = 180
2x = 180 - 26
2x = 154
x = 154/2
x = 77

1st angle, x, is equal to 77°
2nd angle, x + 26°, is 77° + 26° = 103°

77° + 103° = 180°
180° = 180°
3 0
3 years ago
Who baked more cookies per batch?
Gnom [1K]
Jenny does, she bakes 12 for every x and dan bakes 10 for every x.
So in conclusion jenny bakes more cookies per batch
5 0
3 years ago
Read 2 more answers
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