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3 years ago

How can you determine if an equation will have:

Mathematics

1 answer:

Marysya12 [62]3 years ago

4 0

Answer:

if you cancel out all of the X terms via addition or subtraction, and you get something along the lines of 1= 2, then you have no solution.

11× +4=11×7 subtract 11 X from both sides 4=7 no value for x will satisfy this equation. if you cancel out all the EX terms via addition or subtraction and you get something along the lines of 1 equals 1, then you have infinity solutions.

2(× +1)=2×+2 expand the left side by using distributive property. 2 x+2=2×+2 subtract 2 X from both sides. 2 equals to every value for x will satisfy this equation if you can't cancel out all the X terms of addition or subtraction, you probably have one solution.

Step-by-step explanation:

i hope this helps

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Need answers ASAP 15 points!

VLD [36.1K]

Answer:

Step-by-step explanation:

Part A: 5/26

Part B: 5/26+ 1/2 which is 18/26 or 9/13

Part C: 5/26 +21/25. 'without replacing' means there is one less option in the bag. So denominator becomes 26-1=25. Numerator is 21 because there are a total of 21 consonants in the alphabet. Since we removed a vowel and not a consonant, it will remain 21.

7 0

3 years ago

Can somebody help please??<br> urgently

VMariaS [17]

The perimeter of the shaded part is 3.93 cm.

Step-by-step explanation:

Step 1; The perimeter of a circle is calculated by multiply 2π with the radius. This given circle is not an entire circle. An entire circle has an angle if 360° while this has an angle of 50°. So we divide 360° with 50°.

Number of these shapes to form a full circle = 360° / 50° = 7.2. So 7.2 of these shapes will need to be combined to form a full circle. So we can calculate the perimeters of full circles and then divide it by 7.2 to get the parameters of the given sections.

Step 2; The parameter and circumference of a circle are equal. So

The perimeter of shaded region = Perimeter of the entire region - Perimeter of the unshaded region.

The Perimeter of circle with radius 8cm = 2π × 8 = 50.2654 cm.

The perimeter of the given shape = $\frac{50.265}{7.2}$ = 6.9813 cm

The perimeter of circle with radius, 3.5cm (8cm - 4.5cm) = 2π × 3.5 = 21.9911 cm,

The perimeter of unshaded region = $\frac{21.991}{7.2}$ = 3.0543 cm.

So the perimeter of shaded region = 6.9813 cm - 3.0543 cm = 3.927 cm.

Rounding 3.927 to 3 significant figures we get the perimeter of shaded region equal to 3.93 cm.

8 0

3 years ago

Please help me latterly i posted this and no one bothered too help me plz i beg of u i really need help u have no idea i am fail

Nostrana [21]

1. An equation for income, I = 3c + 2p, where c is the number of calendars sold and p is the number of posters sold.

2. When 25 calendars and 18 posters are sold, the income is $111.

3. Income for selling 12 calendars and 15 posters is $66.

4. 3 possible combinations; 1) 30 calendars and 5 posters. 2) 20 calendars and 20 posters. 3) 10 calendars and 35 posters.

Step-by-step explanation:

Step 1; It is given that each calendar costs $3 and each poster costs $2. So if c is the number of calendars sold and p is the number of posters sold.

Total income, I = 3c + 2p.

Step 2; Now if we substitute the value of c with 25 and p with 18, we get

I = 3c + 2p = 3 (25) + 2 (18) = 75 + 36 = $111.

Step 3; If the value of p is 12 and the value of c is 15, we have

I = 3c + 2p = 3 (12) + 2 (15) = 36 + 30 = $66.

Step 4; To find combinations that cost $100, we substitute I with 100. So the equation becomes 3c + 2p = 100.

When c = 30, 3 (30) + 2p = 100, 2p = 100 - 90 = 10, 2p = 10, p =5.

When c = 20, 3 (20) + 2p = 100, 2p = 100 - 60 = 40, 2p = 40, p = 20.

When c = 10, 3 (10) + 2p = 100, 2p = 100 - 30 = 70, 2p = 70, p = 35.

4 0

4 years ago

Suppose someone tells you that she has a triangle with sides having lengths 2.6, 8.1, and 8.6. Is this a right triangle? Why or

Lunna [17]

This is not a right triangle as 2.6 squared plus 8.1 squared does not equal 8.6 squared (Pythagorean theorem)

8 0

3 years ago

Which symbol creates a true sentence when x equals 2? 6 • 8 – 2x _____ 6(5 + x) < > = ?

34kurt

48－4=44,in the left
6×7=42,in the right
44＞42,so ＞ is the answer

5 0

3 years ago

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