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3 years ago

Martin earned the following scores on his last five tests.

Mathematics

2 answers:

mixas84 [53]3 years ago

8 0

Answer:

Hi the answer would be 18. Hope I helped

Step-by-step explanation:

egoroff_w [7]3 years ago

7 0

98, 78 , 84, 75, 91

The interquartile range formula is the first quartile subtracted from the third quartile:

IQR = Q3 – Q1.

****************************************************
Step 1: Put the numbers in order.
75, 78, 84, 91, 98

Step 2: Find the median.
75, 78, 84, 91, 98

Step 3: Place parentheses around the numbers above and below the median. 
Not necessary statistically, but it makes Q1 and Q3 easier to spot.
(75, 78), 84, (91, 98)

Step 4: Find Q1 and Q3
Think of Q1 as a median in the lower half of the data and think of Q3 as a median for the upper half of data.
(75, 78), 84, (91, 98)

*(75, 78) ---> (75 + 78) ÷ 2 = 76.5
*(91, 98) ---> (91 + 98) ÷ 2 = 94.5

Step 5: Subtract Q1 from Q3 to find the interquartile range.
94.5 – 76.5 = 18

IQR = 18

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How do I get the answer for 1 1/2 x 3 x 1 1/9

Mekhanik [1.2K]

$\boxed{1 \frac{1}{2}\times 3 \times 1 \frac{1}{9}=5}$

<h2>Explanation:</h2>

in this problem we have the following expression:

$1 \frac{1}{2}\times 3 \times 1 \frac{1}{9}$

So here:

$1 \frac{1}{2} \ and \ 1 \frac{1}{9} \ are \ written \ as \ mixed \ fractions$

Let's convert them as improper fractions:

$1 \frac{1}{2}=1+\frac{1}{2}=\frac{1\times 2+1}{2}=\frac{3}{2} \\ \\ 1 \frac{1}{9}=1+\frac{1}{9}=\frac{1\times9 +1}{9}=\frac{10}{9}$

Rewriting our expression:

$\frac{3}{2}\times 3 \times \frac{10}{9}=\frac{3\times 3 \times 10}{2\times 9}=\frac{90}{18}=5$

<h2>Learn more:</h2>

Simplify: brainly.com/question/10644722

#LearnWithBrainly

3 0

3 years ago

Find a polynomial with a degree of 3, and the zeros 1,7, & -4 with no other zeros.

jarptica [38.1K]

Answer:

$f(x)=(x+4)(x-7)(x-1)$

Step-by-step explanation:

zeroes are when you plug in that x value and get y=0

therefore if you set x = that number and solve for 0 you get a "function"

multiplying these together will yield the complete 3rd degree polynomial

x = 1

x-1=0

x=7

x-7=0

x=-4

x+4=0

$f(x)=(x+4)(x-7)(x-1)$

If needed you could expand but I'm too lazy

5 0

3 years ago

Here is a picture of a math problem.

MAXImum [283]

The coordinates are (6,-9) (-12,-3) (0,-7)

you put 6 in the place of x to get 6+3y=-21 then you must take 6 away from each side to get 3y= -27 then divide each side by 3 so -27 divided by 3 is -9. do this for all of them! hope it helped!

3 0

3 years ago

The height of an object from a distance

olga55 [171]

Y = height
x = distance from tower

tan(19.9) = y/x

tan(21.8) = y/(x-50) ( x is 50 feet closer so subtract 50 from x)

find the tan of the angles:
tan19.9 = 0.362
tan21.8 = 0.400

replace those values in the equations:
0.362 = y /x
0.400 = y / (x-50)

rewrite to solve for height:
0.362x = y
0.400(x-50) = y distribute the 0.400 and rewrite as 0.400x-20 =y

now solve:

0.362x = 0.400x-20

add 20 to each side:
0.362x +20 = 0.400x

subtract 0.362x from each side:

20 = 0.038x

divide both sides by 0.038
x = 20 / 0.038 = 526.3 feet

now that x is known replace x in the original equation and solve for y:

tan19.9 = y /x

0.362 = y / 526.3
y = 0.362 x 526.3
y = 190.5

the height of the tower is 190.5 feet

7 0

3 years ago

- Maya is playing golf. On her first two holes,

antiseptic1488 [7]

Answer:

Her score after the first two holes is 5 over par

Step-by-step explanation:

Calculating golf scores we have;

Maya's score on the first hole is one under par

Maya's score on the second hole is six over par

Therefore we have Maya's score after the first two holes is given as follows;

She took one less than her allotted shot for the first score and 6 more than her allotted shot for the second hole

Her gross score is 1 under par + 6 over par = 5 over par

Therefore, her score after the first two holes is 5 over par

7 0

3 years ago