3 years ago

Work out the missing numbers: a)(-4)x =320

Mathematics

2 answers:

MA_775_DIABLO [31]3 years ago

7 0

Answer:

x=-80

Step-by-step explanation:

zubka84 [21]3 years ago

5 0

Answer:

$x=-80$

Step-by-step explanation:

$a) (-4)x=320\\\\x=\frac{320}{-4} \\\\x=-80$

You might be interested in

Find the area of triangle ABC with vertices A(2,1), B (12,2), C (12,8). Hence, or otherwise find the perpendicular distance from

Lapatulllka [165]

<h2>The area of a triangle is =54 square units</h2><h2>The perpendicular distance from B to AC is = $\frac{108}{\sqrt{149} } units$ </h2>

Step-by-step explanation:

Given a triangle ABC with vertices A(2,1),B(12,2) and C(12,8)

$x_1=2,y_1=1,x_2=12,y_2=2,x_3=12 and y_3=8$

The area of a triangle is= $\frac{1}{2} [x_1(y_2-y_3) +x_2 (y_3- y_1)+x_3(y_1-y_2)]$

= $|\frac{1}{2} [2(2-8+12(8-1)+12(1-2)]|$

= $|-54|$ = 54 square units

The length of AC = $\sqrt{(x_1-x_3)^{2} +(y_1-y_3)^2}$

= $\sqrt{(2-12)^{2} +(1-8)^2}$

= $\sqrt{149}$ units

Let the perpendicular distance from B to AC be = x

According To Problem

$\frac{1}{2} \times x \times \sqrt{149} = 54$

⇔ $x =\frac{108}{\sqrt{149} }$ units

Therefore the perpendicular distance from B to AC is = $\frac{108}{\sqrt{149} } units$

5 0

3 years ago

2/5 of 60 please help

klasskru [66]

Answer:

60/5 is equal to 12. so 12 x 2= 24, and 5 x 12=60, so 24/60, or just 24

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Giventheequation3x+y=6,writeasecondequationthat,togetherwiththefirst,will create a system of equations thata.has one solutio

Svetradugi [14.3K]

(4,7.8) is your answer please give brainliest!

6 0

3 years ago

Barry bought 25 kg of fish-flavored cat food and 35 kg of chicken- flavored cat food for the cat rescue center. He is going to d

max2010maxim [7]

25 + 35 = 60
300/60 = 5
the answer is 5 packets

7 0

4 years ago

Elizabeth is mowing lawns in her neighborhood to earn spending money. She can mow about 1/3 of a lawn in 20 minutes. What is her

Savatey [412]

What i think the answer is 6.66 because u multiply 1/3 by 20

8 0

3 years ago