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Lilit [14]
2 years ago
9

There are 346 children going for an excursion.

Mathematics
1 answer:
NeTakaya2 years ago
5 0

Answer:

26 children

Step-by-step explanation:

346-8*40

346-320

26

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(1) True or False? Explain your answer. The signs of the cosecant function will be the same as the sine function in each of the
aleksklad [387]

Answer:

True

Step-by-step explanation:

A number and its reciprocal have the same sign.

The cosecant is the reciprocal of the sine.

Therefore, the cosecant has the same sign as the sine.

4 0
3 years ago
Martin can run 1 mile in 7 minutes. What proportions can be written from this information?
jeka57 [31]

Answer:

\frac{1}{7}=\frac{3}{21}

\frac{7}{1}=\frac{21}{3}

Step-by-step explanation:

Verify each case

case 1) \frac{1}{7}=\frac{3}{21}

Multiply in cross and then compare both sides

1*21=7*3

21=21 ----> is true

therefore

Is a valid proportion

case 2) \frac{1}{21}=\frac{3}{7}

Multiply in cross and then compare both sides

7*1=21*3

7=63 ----> is not true

therefore

Is not a valid proportion

case 3) \frac{7}{1}=\frac{3}{21}

Multiply in cross and then compare both sides

21*7=1*3

147=3 ----> is not true

therefore

Is not a valid proportion

case 4) \frac{7}{1}=\frac{21}{3}

Multiply in cross and then compare both sides

3*7=1*21

21=21 ----> is true

therefore

Is a valid proportion

case 5) \frac{1}{7}=\frac{21}{3}

Multiply in cross and then compare both sides

3*1=7*21

3=147 ----> is not true

therefore

Is not a valid proportion

8 0
2 years ago
Read 2 more answers
(4-1/4+2/3)+(5+4/3-6/5)-(6+7/4+4/5)
svetoff [14.1K]

Answer:

The answer is 1…

Step-by-step explanation:

Well you can elimate a lot of fractions right off the bat just multiply everything by 60/1.

the final result will be

(240+15+40)+ (300+90-72)- (360+105+24)

Now solve

240-15+40=265

300+90-72=318

360+105+24=513

265+268-489

265+268= 11

533-513=20

bleh i m not sure naymore

5 0
3 years ago
Which is the equation of the line that passes through the points (4,3) and (6,2)?
NeX [460]

Answer:

\large \boxed{y =  - 0.5x + 5}

Step-by-step explanation:

<u>Goal</u>

  • Find the equation of the line.

<u>Given</u>

  • Coordinate points which are (4,3) and (6,2).

<u>Step</u><u> </u><u>1</u>

  • Find the slope by using slope formula or rise over run.

\large{m =  \frac{y_2-y_1}{x_2-x_1} }

Substitute the coordinate points in

m =  \frac{3 - 2}{4 - 6}  \\ m =  \frac{1}{ - 2}  \\ m =  -  \frac{1}{2}  \longrightarrow  - 0.5 \\ m =  - 0.5

<u>Step</u><u> </u><u>2</u>

  • Rewrite the equation in slope-intercept form by substituting m = -0.5

\large{y = mx + b}

Substitute m = -0.5

y =  - 0.5x + b

<u>Step</u><u> </u><u>3</u>

  • Find the value of b by substituting any given coordinate points in the equation.

<em>Substituting</em><em> </em><em>both</em><em> </em><em>coordinate</em><em> </em><em>points</em><em> </em><em>still</em><em> </em><em>give</em><em> </em><em>the</em><em> </em><em>same</em><em> </em><em>answer</em><em>.</em><em> </em>

<u>Step</u><u> </u><u>3.</u><u>1</u>

  • Substitute (4,3) in the equation.

y =  - 0.5x + b \\ 3 =  - 0.5(4) + b \\ 3 =  - 2.0 + b \\ 3  =  - 2 + b \\ 3 + 2 = b \\ 5 = b

<u>Step</u><u> </u><u>3</u><u>.</u><u>2</u>

  • Substitute (6,2) in the equation.

y =  - 0.5 x+ b \\ 2 =  - 0.5(6) + b \\ 2 =  - 3.0 + b \\ 2 =  - 3 + b \\ 2 + 3 = b \\  5 =  b

<u>Step</u><u> </u><u>4</u>

  • Rewrite the equation again by substituting the value of b.

y =  - 0.5x + b

Substitute b = 5 in the equation.

y =  - 0.5x + 5

Hence, the equation is y = -0.5x + 5

3 0
2 years ago
2. Factorise : (i) 9x² + y² + 64 - 6xy +16y - 48x​
kumpel [21]

Answer:

9x² + y² + 64 - 6xy - 16y - 48x

= 9x² - 6xy - 48x + y² - 16y + 64

= 9x² - 6x(y - 8) + y² - 2.8y + 8²

= (3x)² - 6x(y - 8) + (y - 8)²

= [3x - (y - 8)]²

= (3x - y + 8)²

Step-by-step explanation:

4 0
3 years ago
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