All categories

3 years ago

40 foot ladder is leaning against a building. The foot of the ladders is 32 feet

Biology

1 answer:

Karo-lina-s [1.5K]3 years ago

7 0

Answer: 18°24'

cos

Explanation:

Use equation for cos α=b/c

b=32

c=40

cosα=32/40

cosα=4/5

csc=71.62°

α=71.62°

90°+α+β=180°

β=180-α-90

β=180-71,62-90

β=18.4°

β= 18°24'

You might be interested in

In what part of the mrna does degradation generally begin?

noname [10]

When the mrna has done it's job for the celll and is no longer of any use, it starts to degeneate

3 0

2 years ago

What is an active site?

Ierofanga [76]

Answer:

B is correct.

Explanation:

8 0

3 years ago

What is the difference between a vascular and a nonvascular plant? In your answer, discuss how water moves in each type of plant

Otrada [13]

Vascular plants have a vascular system while nonvascular plants have NO vascular system.

Explanation:

The vascular system is made of phloem – that transports food- and xylem- that transports water and minerals- in the higher plants. Examples of these higher plants are like trees and shrubs. These plants can take up water and nutrients from the soil and transport them up the plants to the leaves.

Lower plants have no vascular system (avascular). They mainly absorb food and water readily from their environment even through their leaves. This is why these plants are mainly found in humid areas like waterways, like canals. Examples of such lower plats are ferns and mosses.

3 0

3 years ago

Do cold air masses and hot air masses automatically combine?

ankoles [38]

Answer:

If the boundary between the cold and warm air masses doesn't move, it is called a stationary front. The boundary where a cold air mass meets a cool air mass under a warm air mass is called an occluded front. At a front, the weather is usually unsettled and stormy, and precipitation is common."

Explanation:

5 0

3 years ago

1. In a population of 200 field mice, 98 mice are homozygous dominant for brown fur (FF), 84 mice are heterozygous (Ff), and 18

iVinArrow [24]

A.
The genotype frequencies can be determined by dividing the number of individuals with a genotype by the total number all the individuals.
FF genotype frequency:
98÷200=0,49. There are approximately 5 homozygous dominant mice in 10.
Ff genotype frequency:
84÷200=0,42. There are approximately 4 heterozygous mice in 10.
ff genotype frequency:
18÷200=0,09. There are approximately 1 homozygous recessive mouse in 10.

B.
To determine the frequency of an allele we can divide the number of times that the allele appears by the total number of alleles.
F allele frequency:
 $\frac{(98*2)+84}{400}$ =0.7
There are 7 F alleles in 10 random alleles.
f allele frequency:
$\frac{84+(18*2)}{400}$ =0.3
There are 3 f alleles in 10 random alleles.

6 0

3 years ago