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elena-s [515]
3 years ago
9

Can someone help with these math questions please

Mathematics
1 answer:
emmainna [20.7K]3 years ago
8 0
3. Let a taco's cost be t and the cost of a glass of milk be m:t + m = 2.1, 2t + 3m = 5.15. This is choice D.
4. The only difference is that 4 has been added to the y-value, so the graph remains congruent, but it is moved up along the y-axis, which is choice H.
5. The total number of sandwiches sold is 500, so the fraction of ham-and-cheese sandwiches is 75/500 = 3/20. Since an entire circle is 360 degrees, the fraction for the ham-and-cheese sandwiches is (3/20)(360) = 54 degrees, which is choice C.
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Write an eqation pf the line that passes through (-2,3) and is perpendicular to the line y= 2x - 1
Romashka [77]

Answer: x=1

Step-by-step explanation: Look at highlight_red%28+3%2Ax+%29-highlight_red%28+x+%29%2B2=4.

Eliminated similar terms highlight_red%28+3%2Ax+%29,highlight_red%28+-x+%29 replacing them with highlight_green%28+%283-1%29%2Ax+%29

It becomes highlight_green%28+%283-1%29%2Ax+%29%2B2=4.

Look at %28highlight_red%28+3+%29-highlight_red%28+1+%29%29%2Ax%2B2=4.

Added fractions or integers together

It becomes %28highlight_green%28+2+%29%29%2Ax%2B2=4.

Look at highlight_red%28+%28highlight_red%28+2+%29%29%2Ax+%29%2B2=4.

Remove unneeded parentheses around factor highlight_red%28+2+%29

It becomes highlight_green%28+2+%29%2Ax%2B2=4.

Look at 2%2Ax%2B2=highlight_red%28+4+%29.

Moved these terms to the left highlight_green%28+-4+%29

It becomes 2%2Ax%2B2-highlight_green%28+4+%29=0.

Look at 2%2Ax%2Bhighlight_red%28+2+%29-highlight_red%28+4+%29=0.

Added fractions or integers together

It becomes 2%2Ax%2Bhighlight_green%28+-2+%29=0.

Look at 2%2Ax%2Bhighlight_red%28+-2+%29=0.

Removed extra sign in front of -2

It becomes 2%2Ax-highlight_green%28+2+%29=0.

Look at highlight_red%28+2%2Ax-2+%29=0.

Solved linear equation highlight_red%28+2%2Ax-2=0+%29 equivalent to 2*x-2 =0

It becomes highlight_green%28+0+%29=0.

Result: 0=0

This is an equation! Solutions: x=1.

6 0
3 years ago
Slope = 2, passing through (-3, 8)
natima [27]

Answer:

y - 8 = -2(x + 3)

General Formulas and Concepts:

Point-Slope Form: y - y₁ = m(x - x₁)  

x₁ - x coordinate

y₁ - y coordinate

m - slope

Step-by-step explanation:

<u>Step 1: Define</u>

Slope <em>m</em> = -2

Point (-3, 8)

<u>Step 2: Write equation</u>

y - 8 = -2(x + 3)

6 0
3 years ago
A person can pay $26.55 for a membership to the science museum and then go to the
Anarel [89]
9 visits in total. Please mark me brainliest and/or thank me

Have a good day! :)
4 0
3 years ago
Cassandra assigns values to some of the measures of triangle ABC. If angle A measures 30°, a = 6, and b = 18, which is true?
Anna [14]

Answer:

The triangle does not exist because sin(A)/a can not be equal to sin(B)/b

Step-by-step explanation:

we know that

step 1

Find the measure of angle B

Applying the law of sines

\frac{sin(A)}{a}=\frac{sin(B)}{b}

we have

A=30\°

sin(30\°)=1/2

a=6\ units

b=18\ units

substitute

\frac{(1/2)}{6}=\frac{sin(B)}{18}

\frac{1}{12}=\frac{sin(B)}{18}

sin(B)=\frac{18}{12}

sin(B)=\frac{3}{2}=1.5

Remember that the value of sine can not be greater than 1

therefore

The triangle does not exist because sin(A)/a can not be equal to sin(B)/b

8 0
3 years ago
I need to solve 145 + 67 in 5 different ways.
Mrrafil [7]
145+67=212 One other way to solve it is to solve it is you subtract.
5 0
3 years ago
Read 2 more answers
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