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3 years ago

1. Emily wants to buy turquoise stones on her trip to New Mexico to give to at least 4 of her friends. The

1 answer:

8 0

Answer: she could get any of them the smalls ones or the large ones because 4x4=16 and 4x6=24 so she could pick the small or the large ones.

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4(a + -5) in expanded form?

elena-s [515]

Answer: a+-5 x 4 (I THINK)

Step-by-step explanation:

4 0

3 years ago

Bryan drives up to a traffic circle from Elm Street. He drives 15 meters around the circle is a perfect circle with a radius of

Tom [10]

Answer:

Step-by-step explanation:

Using the formula for calculating the length of an arc to get the angle of Maple Street to Elm Street;

Length of an arc = θ/360 * 2Πr where r is the radius of the circle.

Given r = 10m and length of the arc = 15m

On substituting;

15 = θ/360 * 2π(10)

15 = θ/360 * 20π

θ/360 = 15/20π

θ/360 = 0.2387

θ = 360* 0.2387

θ = 85.9°

<em>Hence Maple street is at 85.9° to Elm street.</em>

8 0

3 years ago

Read 2 more answers

5-3x =-10 what is x?

Delvig [45]

Answer:

x = 5

Please tell me if im incorrect and hope this helped ^^

3 0

3 years ago

Read 2 more answers

I need help with these three problems please

Liono4ka [1.6K]

Answer:

Q7. 11.3 inches (3 s.f.)

Q8. 96.2 ft

Q9. 36.4cm

Step-by-step explanation:

Q7. Please see attached picture for full solution.

Q8. Let the length of a side of the square be x ft.

Applying Pythagoras' Theorem,

$34^{2} = {x}^{2} + {x}^{2} \\ 2 {x}^{2} = 1156 \\ {x}^{2} = 1156 \div 2 \\ {x}^{2} = 578 \\ x = \sqrt{578} \\$

Thus, the perimeter of the square is

$= 4( \sqrt{578} ) \\ = 96.2 ft\: \: \: (3 \: s.f.)$

Q9. Equilateral triangles have 3 equal sides and each interior angle is 60°.

Since the perimeter of the equilateral triangle is 126cm,

length of each side= 126÷3 = 42 cm

The green line drawn in picture 3 is the altitude of the triangle.

Let the altitude of the triangle be x cm.

sin 60°= $\frac{x}{42}$

$\frac{ \sqrt{3} }{2} = \frac{x}{42} \\ x = \frac{ \sqrt{3} }{2} \times 42 \\ x = 21 \sqrt{3} \\ x = 36.4$

(to 3 s.f.)

Therefore, the length of the altitude of the triangle is 36.4cm.

4 0

3 years ago

Read 2 more answers

???? I’m very confused

Liono4ka [1.6K]

C; 120 because 24x=360 so x=15. Then ABC is 8x, so 8*15=120.

8 0

4 years ago