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o-na [289]
3 years ago
8

Calculate the following expression. show steps 15/7 - 2/5

Mathematics
2 answers:
aalyn [17]3 years ago
8 0
15/7 x 5 and 2/5 x 7
75/35 - 14/35 = 61/35
ivolga24 [154]3 years ago
5 0

Answer:

1 26/35

Step-by-step explanation:

Before subtracting, you must find the common denominator.

The lowest number 7 and 5 can both make is 35.

Now, we must convert the fractions.

15/7 = 75/35

2/5= 14/35

Now because we have the same denominator, we can subtract.

75/35

-

14/35= 61/35.

61/35= 1 26/35.

Now you can simplify your answer. 1 26/35 cannot be simplified so that's your answer.

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Answer:

D olmalı diğerleri yanlış

5 0
3 years ago
What is 3\8 x 2\4 PLEASE HURRY
tatiyna
3/8 multiplied by 2/4
Multiply the numerators 3x2=5
Multiply the denominators 8x4=32
5/32 this fraction cannot be simplified further
4 0
2 years ago
Read 2 more answers
If BC = 6 and AD = 5, find DC. 4 4.5 7.2
anygoal [31]

Answer:

The length of CD is 4 units

Step-by-step explanation:

Given the triangle ABC and if BC = 6 units and AD = 5 units

we have to find the length of DC.

In ΔABC and ΔBDC

∠ABC=∠BDC    (each 90°)

BC=BC   (common)

∠C=∠C   (Common)

By ASA rule, ΔABC≈ΔBDC

Therefore their corresponding sides are in proportion

\frac{BC}{AC}=\frac{BD}{AB}=\frac{CD}{BC}

\frac{BC}{AC}=\frac{CD}{BC}

Let CD=x units

BC^2=(AC)(CD)

6^2=(AD+CD)CD

36=(5+x)x

36=5x+x^2

x^2+5x-36=0

x^2+9x-4x-36=0

x(x+9)-4(x+9)=0

(x-4)(x+9)=0

x=4, -9

Distance can't be negative therefore

The length of CD is 4 units

4 0
3 years ago
Nathaniel purchases a one-year membership pass to an art museum. As a member, he receives a discounted entrance fee. The total c
wolverine [178]

It's a linear function with y-intercept = 12.

The slope-intercept form:

f(x)=mx+b\\\\m=\dfrac{y_2-y_1}{x_2-x_1}

Let's read the coordinates of two points on the graph:

(2, 15) and (4, 18)

Substitute to the formula of a slope:

m=\dfrac{18-15}{4-2}=\dfrac{3}{2}=1.5

We have the equation of a line:

\boxed{f(x)=1.5x+12}

We need calculate the value of function for x = 1 and x = 20.

Substitute:

f(1)=1.5(1)+12=13.5

f(20)=1.5(20)+12=30+12=42

$12 is the "Fixed Fee", therefore the discounted entrance fee to the art museum is

\$13.50-\$12.00=\$1.50

The total cost is $42.00 after 20 visits.

<h3>Answer D.</h3>
5 0
3 years ago
3.5 pounds $1.19 per pound how much did she spend? to the nearest cent
Snezhnost [94]
4.16 I think if I did the math right
6 0
3 years ago
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